^^ Great post. You seem to know quite a bit about genetics and the influence of hormones on a child in the womb...
Are you a doc or a medical biologist (or studying)?
As for the 'homosexuals don't procreate'-opinion - like Alfonsojose said, there still is the CLOSET, and I don't think I am exaggerating if I state that the majority of gays is married with kids, if only regarding the large parts of this planet where being gay is still considered 'a sin', deviant behaviour, etc.
Just try coming out in Iran, for instance. You might well end up hanging from a rope.