haha. yeah. But not just that. It has to do with the low percentage of people who are homosexual and what position they hold in society.
Lets see if I can make this short (probably not). A kid grows up and starts to have feelings. Parents find out and try to change the child or make the child leave their home. Friends might also shun the child. (granted some of this is extreme but sometimes it doesn't take much) The child then runs to others like them for acceptance. Even if the child only feels slight discomfort, they still might go find others like them because everyone likes to feel accepted by someone and to make sense of who they are as a person. Since they can't figure this stuff out with friends and at home, this leads them to clubs, bars, and internet sites or to friends who introduce them to the clubs, bars, and internet sites. When they go to these places to learn and explore they come across others who used to be treated the same way but are much older. These are those who have already accepted this "way" of life.
Let me define the "way" a bit more. Older people seeking out young fresh faces. They look for innocent people to help so that they can add another mark on their list. But why? Because someone did it to them, when they were also young. and because of the uncontrollable harmonal and immoral qualities that this environment engraves within them. These new faces then are taken advantage of again and again, but at least they feel accepted and liked, which is why they came. They looked to be loved and make friends and they got both in the harshest forms. By the time the child who was anywhere from 15 to 18, sometimes younger, when this began to the time they are 25, they will probably have slept with 20 or 25 people, maybe a little more, maybe a little less.
But why so many? Part of the reason is because of what I just mentioned, but it is also because they have no role models. They run away from religion because they think it rejects them. They run away from their parents because their parents have rejected them, or perhaps they are rebelling from what their parents stand for which is something that teens do at times, but they are doing it in the wrong places and in the wrong ways due to the reasons mentioned above. But they don't know any better. They are just kids. Learning and figuring themselves out. Some may even hide it as to not upset their parents.
Another reason that it is easy to go from one person to another in a vast community where sex is a focus is that there are so many homosexuals in one location. First, why is sex a focus? Because everyone made it that way. Homosexuals are treated for the difference they represent to the heterosexual and religious majority, sex driven and immoral, so the community is focused as such. How do you distinguish if someone is homosexual in the mind of a heterosexual? By their act of sex. Now back to why are there so many in one location? Because they are all pushed away from their families, friends, and society and into these locations which are breading grounds for HIV and other diseases. Their first relationship was most likely someone taking advantage of them and them having sex within a couple of days of knowing that person. The next as well. Eventually they become accustomed to making quick relationships and don't allow time for a long lasting relationship to develop. Nor do they have to, since marriage is not an option. They can just pack up their suitcase and go sleep with the next week's flavor simply because they found a flaw in the last. No thought of, "could I spend my life with this person." So they don't, they just sleep with more people and more and more, looking for the person to complete them just as every person does in life but they do so through a newly learned method that reaps no reward. It is hard enough to find someone to match yourself in the world for heterosexuals without these ill trained psychologies, but when you take pairs of people who are accustomed to quick relationships, it is near impossible.
Now factor in the fact that there aren't as many homosexuals as heterosexuals and you can see why HIV spreads so rapidly in the homosexual community. Also, with males specifically, it is easier for them to become sex addicts.
To make matters worse, society dumps every unwanted part of it into the "gay" community. They bundle in with them nymphomaniacs, S&M, pedophiles, transvestites, etc. So it isn't just about homosexuality anymore, but anything that isn't considered "normal." Society pretends not to look at them and hopes that they go away. I would go as far as to say it is one of the accepted underbellies of society and many parents force their children into it. A parent has a 16yr old who is gay and doesn't know what to do with him/her but wants to at least "try" to be a parent. The kid gets a boyfriend/girlfriend who is 27 or older and the parent brushes it off as "oh my child can't help it, they are just gay and I should support them." Or friends hide the fact that the child is dating a much older person. All the while the 27yr old is most likely one of the ones who is taking advantage of the 16yr old or using them to gain status amongst their friends.
This society is also heavy into all kinds of drugs where these kids get introduced at a very early age through this same method. There is a LOT more going wrong than a simple mental disorder. This is a whole cultural issue that is destroying self esteem, personalities, lives, etc. I didn't edit this for clarity, but I'm sure you got the points.