Re-reading Chimpanzee Politics by Frans de Waal. What strikes me: in a chimp colony, alpha males indeed do more mating, but NOT because females prefer them: they simply decide who can mate and who can't. Often females mate with another male when the alpha isn't around. Also, the position of an alpha male is not for life: he can be dethroned, and the decision lies partly with the colony (including the females!). So strictly there are no 'alpha male genes', just 'alpha male ambition genes'. This, in turn, makes it less interesting for females to mate with the alpha because of his 'genes'.

How is that with humans, who stand very close to chimps (and bonobos, who are sexually not selective at all and semi-matriarchal)? I still think evolutionary psychology is important in human sexuality, but there should be more scientific research to make the details clear. Now theories about it sound like we're just any mammal, but every mammal has a different strategy.