So let me put it a bit differently: If you were to observe that there is a certain kind of behavior, a particular form of activity, which humans in every culture, all over the world, have engaged in since time immemorial, wouldn’t you begin to suspect that said activity had some inherent survival value? If not survival in an ultimate, of-the-fittest Darwinian sense (though maybe that, too), then at least in the sense of carving out one’s own ecological niche in an environment whose principal dangers and principal opportunities, are — other human beings?