Pinhead,
do you honestly believe that EVERY human HAS TO procreate?

You're obviously not a scientist, because then you would know that some people have genetic problems that lead to evolutionary dead ends.

For all we know homosexuality could be evolution's way of telling you "your genes are bad, don't make babies". We do know that it is a body/brain chemistry thing, but what causes the shift is unknown, but it's fairly certain that a higher force is at work (whether it is God or the laws of science).