In this evolutionary theory of morality, asking ‘Why should we be moral?’ is like asking ‘Why should we be hungry?’ or ‘Why should we be horny?’ For that matter, we could ask, ‘Why should we be jealous?’ or ‘Why should we fall in love?’ The answer is that it is as much a part of human nature to be moral as it is to be hungry, horny, jealous, and in love.nike air max 1 release