I don't hate gay people, I've said that many times.
I dislike the fact that there is a mutation that causes something that should not exist.
Again, I'll repeat my theory:
Because it's impossible to reproduce by anal sex, if gayness was a genetic mutation, then it should be impossible to pass down to children. So I'm pretty split between the two theories. It could be because of the upbringing, too, but that just seems so weird. Then it would be psychological.