But the logic
of mblase's writeup presumes that there is no benefit
in being homosexual
, either for the individual
or the species
. While the biological advantage
of heterosexual intercourse
is that you can produce children
, perhaps the advantage of sex
with someone your own gender
is that you can't
. The 'tribe' needs maiden aunt
s to care for the children
, and population growth
can only go so far. Maybe the contribution
made by the childless
is so great that a population
can't live without it.
So, back to the heterosexuals. Who knows what causes it? Certainly on an individual level, for women heterosexual intercourse and resulting childbirth has been the greatest threat to their survival. One for one, there's no advantage in reproduction for women.
It's going to wrench your mind into 23 pieces whichever way you look at it. Perhaps the reason we don't usually debate the reasons for people being heterosexual is simply that they're the majority. And most people are normal, right?