The obvious conclusion to draw from all this is that complex human feelings and behaviors can’t in general be given reductive evolutionary explanations. There are more things in heaven and Earth than are dreamt of in your philosophy.

Evolutionary theory has contributed approximately zip to our understanding of human sexuality. But it sure has contributed many volumes to the literature on it. Sadly, much of the allegedly scientific literature on homosexuality just rewords Catholic doctrine on the subject in the language of pop evolutionary psychology.