My vote goes to any decent human being of today that doesn't live by the moral code of some 1400-2000 year old men.

You have a point, but some ideas just because they are old does not mean they no longer applicable.

The idea of the good samartain or the do not harm principle come from religion and are a big part of our morals today.

Yes many ideas from religion clash with our current values, but that does not mean all of the ideas are useless.

Many people find the child marriage "questionable" because they don't know anything about it and it's intentions. This marriage was actually more benefitial for Aisha because she went from a regular girl to practically a Queen for the rest of her life. If people actually knew what the marriage was for and its intentions, they would stop using it as a constant attack on Islam.

If you read the Quran or the Bible, you will learn that the "moral code" hasn't changed at all since then. In fact, most people are much worse now compared to those who followed the religions at that time. The only main issue I see is with the rights of homosexuals, which I agree that both religions frown against.

As I said the idea of marrying a really young girl to a much older man is in many cultures for thousands of year to be wrong or was something that was not done.

Going back to Roman times and such there were such marriages but the female was usually of an older age like 13-15+.
Also the youngest marriages were mostly with people of the same age.

How do you know that she wanted to be married with a much older man? How do you know that she ended up happy? And if she didn't: Do you really think that they'd even consider to write about it in that Koran? And do you think that she'd dare to say "no" to this marriage?

Stop blaming the time difference. Some things never change. She could've been a slave as far as we know.

"most people are much worse now compared to those who followed the religions at that time"

Wow. 

From what i know, most historians, scholars etc. general accept Jesus as a man who lived during that time period.

The exact events and stories that are documented in the bible surrounding Jesus's life is obviously much more questionable.

Personally i've only come across one person in my life, who absolutely did not believe that Jesus existed.

Mohammad was celebate until he got married to Khadija who was older than him. He remained monogamous until Khadija died. After she died all sorts of disciples and allied tribes offered daughters in marriage. Can you imagine, in a culture where multitudes of wives is an accepted norm, someone of Mohammad's status turning down a marriage offer? the sort of Embarassment that would cause the girl's father. And no doubt, again, due to the culture of the time that loss of face would be blamed on the girl not being good enough so she would have suffered.

Did you know that Islam was the first religion to limit the number of wives a man can have? In Judaism there was no limit on number of wives, and Jesus made no modifications to this aspect of Jewish law. That's why the Mormon's for instance started out allowing polygamy, they only repudiated it when they realised it was out of step with modern thinking and it limited the ability for them to have broader influence. And of course none of those religions established a minimum age for marriage. The first religious book to establish a minimum age for marriage was Baha'i which set the age at 15, for boys and girls. Indeed in many western countries as recently as the 1930s there were no laws about minimum age of marriage.

So marrying a 9 year old girl in the historical and cultural context of the time is a total non-issue.

The reason why there is doubt over Jesus existence is the lack of first hand real historical evidence.

The Romans recorded everything but the death of Jesus was not a big deal for them. It was simply a move to keep the Jews from rioting. That explains the lack of evidence from Roman historians.