This ‘toon is hilarious.And there’s plenty of science to explain why the percentage of gays in the population has been relatively stable for as long as we can measure it. There are evolutionary reasons, in fact; Alexander cited one; E. O. Wilson proposed one a while ago.This also ignores the fact that “gender” (the psychological definition as distinct from the physical “sex”) appears to be a spectrum, not a binary switch. It’s like handedness — most people are MOSTLY right-handed, but very few are TOTALLY right-handed. The median of the bell curve appears to be around “mostly heterosexual,” but in fact there is considerable range in sexual expression. Not a surprise to anyone who knows the field, or for that matter knows primate studies.As always, more research is indicated.