The Bodyguard Hypothesis of Monogamy

Women typically have a hypergamous mating strategy, which is to mate with a man that's an equal or higher status than themselves. And if there are fewer, fewer of those men around, women are going to either compete aggressively for those men at the top or just remain single. When they make down, it doesn't appear obvious that they're very happy about it because it leads to all sorts of problems increased infidelity on both partners,. Increased erectile dysfunction, anxiety, insomnia, depression medication among mate chips where the woman is mating down and most troublingly still, massive risk factor for intimate partner violence.