Knowing several people that have worked in prisons, the homosexuality is seriously exaggerated. Usually the homosexuality and rape only occurs in the really hard core prisons. If you're in a state pen for murder then that's the type of place you can expect the rape to happen.
But that doesn't really explain homos in regular society. They've clearly got access to the opposite sex, they just don't want it. And most women will tell you that homo guys are generally very attractive so it's not like they can't get any.
The key word in that sentence was IF and you obviously missed it
Fact is, I don't have the desires, thus it isn't much of a choice. You probably think homosexual behavior is pretty disgusting. I do too. So why would someone who has the same sexual orientation as you willfully choose to engage in acts that they also find extremely disgusting?