Women have much more power in the casual sex and casual dating market than men do. Men have the most power in marriage. so women who in engage in casual sex and dating and forgoe A partner who seem like a better fit for marriage are not being fair to men. which is virtually all woman at some point at least when they were younger., Why should any sane man take a woman who behaves in a way that is unfair to men seriously unless he doesnt have better options or isnt very smart? The man's own sexual history here is not relevant to whether promiscuous women are treating men collectively fairly or not.