How come natural selection hasn removed homosexual behavior from the population?
Nope. That’s not the reason. First, kin selection explains how individuals benefit from contributing to the survival of other indviduals’ offspring. Second, group selection is an important concept in any social species (like most primates). Any traits in an individual that contribute to the long-term survival of the *group*, will tend to propagate in the species. To make a simplistic illustration, the same traits that lead to male bonding and cooperation necessary to make an effective hunting party (or a football team) may also lead, in extremes, to attraction to other males. Or traits that lead to child-nurturing instincts may also, when coupled with other instincts, lead to characteristics commonly associated with homosexuality. Third, natural selection only acts on genetics. Homosexuality appears to be at least partly genetic, as a *predisposition* to be attracted to one’s own sex, but there are probably a lot of environmental contributors as well. Fourth, the claim that homosexuali