Something can be normal or natural without being a majority. It is a normal occurrence in human populations that a small percentage of men prefer homosexual relations to heterosexual relations.
Just because something occurs naturally in a given population does not mean that it is "normal." Statistically, homosexual tendencies are abnormal. Politically, those tendencies are now considered acceptable, and have been deemed for legal purposes to no longer be abnormal. But, statistically, they are still abnormal.
Well, without getting too far into the semantics of it, I get your point. I'm sure you get mine as well. But I'll spell it out for others.
If, in an extremely high percentage of cultural and societal groups, there is always a small percentage that choose to engage in this behaviour, than it is normal for that percentage to behave that way. And the corollary would be that if you had a population where there were no men with homosexual tendencies or that 50% of men had homosexual tendencies, those would be abnormal populations.
