I can think of another group of people, if we’re generalizing foolishly, who are desperately insecure, who see sex as way to prove or validate themselves. Who use sex in place of actual intimacy. Who have no trouble being dishonest and manipulative to get it, and who only care about their own pleasure over the more important values of sane, stable, committed relationships. Who are too damaged to actually connect with people and instead just go around fucking. We don’t call them mentally ill though. We usually just call them men.