You are not meant to have the mental maturity to date before you were 16. This is why you are classified as a child lol. At that age half the girls are so shy or scared of what their dads will say they will traumatically say no to dating. Those relationships never last anyway (well maybe like 5% do).

As for failure I already said all I can. No one likes failure, everyone gets upset, hell grown men cry when they loose a final in sport after all year trying to get to the top. The more you fail the easier it gets to cope with it.

Why do you need back up in a bar for fights? Why does fighting even cross your mind lol? Go there to have a few drinks and relax. talk to some blokes make friends.

You say you have all this spare time, including for fitness then get fit if that is what you want. cut your hair different, smile more that will instantly improve yourself image.

You talk about endless bad luck? Everyone has bad luck. Here is some of mine:

- Born 3 month premature, was just over the size of a coke can and needed a blood transfusion and was in one of those incubator things for  a few months.

- I was born legs out first and because it was premature they had no time for cesarean as they worried i was going to die and essentially pulled my leg out of my hip. was lucky they did not rip my leg off.

- I had eye surgery when I was young to remove something that was covering it, the doctor slipped and cut my eye leaving a scare where it impacted my vision.

- My brother through a huge rock in front of me when I was riding my bike down a dirt track in a forest. Went flying over the handle bars and smashed my  face into a tree.

- I had a gun pointed at my head by a Russian solider when I was 5 because he thought it was funny.

- I got hit by a car crossing a pedestrian crossing. road was wet so car slid to the wrong side.

- I was in two car accidents two days in a row, in two different cars.

- Injured my other eye and now it plays up all the time where I need antibiotics and steroids to heal it, then it goes away for a while and comes back when my body is warn out form lack of sleep.

- Back injury for 2 years where I could barely walk (6 months into a new job I just started). I was a prisoner in my own house looking at the same walls.

- I was told daily by my maths teacher i'd never been an engineer because i didn't take my classes seriously, yet here I am telling him fuck you.

- I lost a great job because someone from South Africa decided we needed to cut 60% of the workforce without seeing what value you added and instead create more management layers and hired all his mates to manage.

At the end of the day all that shit impacted me mentally but we all get hit hard and it is how much you get get back up from those hits that will make you strong. It would have been easy to dwell for me on the above and say fuck i am unlucky. Don't get me wrong I did but eventually I moved on, as you have to at some point to move forward.

Maybe that's your problem. You either quit or don't try. That's not very attractive. You're not meant to just get things handed down to you, you're not meant to just wake up and suddenly have a girlfriend. Life is full of failure and rejections, you're meant to pick yourself back up and stop acting like a child. 

Some chick probably thinks you're attractive but won't go out with you because of your attitude. 

There could be a whole world of reasons....

Some men just feel better living alone. Some don´t want a serious engagement. Aome simply don´t have time to dedicate to a family, Some are just unlucky with relationships or not romantic at all. Some will never find true love. Some have different goals in life, like travelling all around the world, engaging in missionary works, become religious leaders. Some had bad experiences and are just tired.

Different people, different lives.

Overwhelming anxiety, but that is just me. Wouldn't call it a choice

I have a friend in his 40's who is incapable of having a relationship of any significance because he does not have the ability to compromise. I personally don't think everyone is lucky enough to meet someone who has the ability to change and adapt as the circumstances in life change. Some can't forgive and look at all women having the same faults rather then just the person you are with. I have had only three very serious relationships about 5 non serious relationships, Today I have been with my partner for 18 years have a beautiful step daughter and gran daughter and am 47. My other serious relationships well one passed on from Cancer, she was my first love and first woman I was intimate with and the other I have no idea.

I think I would be to lonely without a relationship.

Been in a serious relationship for about a year. - And kinda' wished I wasn't.
Life was more relaxed and enjoyable in general when there wasn't any strings and I could bang whoever, I am not the kind of bloke who wants to do all the smoochy stuff anyway.

At the end of the day. we here are trying to help you. However seeing all your responses after each comment it shows that there is bigger concern beyond what we can say with words. I even went out of my way to dig up the past on things that I sometimes would rather forget. I don't normally do that but when I see what you are going through I had to give examples.

Honestly you should seek some professional help. Hell discuss this thread with them and some of the points raised. I think an in person interaction will help you get other some of these negative thoughts you have about yourself. They may even help you during the session on how to deal with these issues and provide you tools to deal with hem outside the sessions.

Theory of mind refers to the notion that many autistic individuals do not understand that other people have their own plans, thoughts, and points of view. Furthermore, it appears that they have difficulty understanding other people's beliefs, attitudes, and emotions.
Many of the tasks used to test this theory have been given to non-autistic children as well as children with mental retardation, and the theory of mind phenomenon appears to be unique to those with autism. In addition, theory of mind appears to be independent of intelligence even though people with Asperger's syndrome exhibit this problem to a lesser degree.
Interestingly, people with autism have difficulty comprehending when others don't know something. It is quite common, especially for those with savant abilities, to become upset when asking a question of a person to which the person does not know the answer.
By not understanding that other people think differently than themselves, many autistic individuals may have problems relating socially and communicating to other people. That is, they may not be able to anticipate what others will say or do in various situations. In addition, they may have difficulty understanding that their peers or classmates even have thoughts and emotions, and may thus appear to be self-centered, eccentric, or uncaring.
Although this is an egocentric view of the world, there is nothing in the theory of mind to imply that autistic individuals feel superior to others.
The vital question which must be asked is: How does one teach individuals with autism to understand and acknowledge the thoughts and feelings of others? One of the methods used to teach autistic children and adults this concept is an intervention developed by Carol Gray called 'social stories.' These short stories describe different scenarios which allow autistic individuals to understand themselves and others better. These stories may motivate them to start asking questions about other people and at least recognize that different individuals think in unique ways.

The fact that you are aware there are different types of people should be enough for you to adapt to them. 

I once too believed we are all equal and he same and used to get upset at people who did not understand. Then i was told there are different types of people early on in my work career and readjusted. in my head I will be like fuck get on with it, what is this dribble. On the outside i'll be nodding and saying ok, uuhm interesting. 

In the past I would cut them off and say that sounds stupid and jsut give them the answer. Now I listen, and acknowledge that I listen. Then once they stop talking, I will say ok sounds good, but WHAT IF you approached it this way, I think it may be more efficient or work to your advantage. 

Being single isn't bad at all. There are lots of reasons for being single, but honestly there are many reasons to not even bother with the dating game. Find a purpose - not just entertaining yourself to the grave - and live your best life.

That said, managing to find someone worth sticking with is revelatory, but you really have to invest a lot of yourself to make it work; if you think you can afford said investment, financially and emotionally, the personal growth is profound. I enjoy being married, but it absolutely isn't for everyone.