It is absolutely ludicrous to give anyone the license to behave in a certain way because "it is evolutionarily adaptable" or "the nature of our biology." If we do, then we are depriving ourselves of what makes us human--free will and the power to overcome our biology--to make choices, to have a conscience. Part of being human is the ability to repress urges, and I think that men and women are certainly capable of doing this. The problem now is that we are perpetuating the acceptance of infidelity by validating the idea that men need sexual variety by giving it a biological basis.

Men actually benefit from monogamy because now everyone has a partner, while in our evolutionary past, it is more likely that every woman had a successful, strong and resourceful partner (although they might have had to share amongst many women), while most men did not have a female partner at all.

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