One thing for sure, if homosexulaity was "normal" in our species we would have died out eons ago.
You're confusing "normal" with "universal". Some people are sterile. Some people are celibate by choice. It doesn't mean they're abnormal. The conservatism that I love is one that recognizes that Americans are free to live as they want, as long as nobody else is hurt. The Puritan strain of modern so-called-conservatism is very bothersome to me. As Barry Goldwater said re: gays in the military: I don't care if they are straight, as long as they can shoot straight. Barry Goldwater is my hero.