Genghis Khan had 6 long-term wives. Most likely, the women were forced to be monogamous, while he obviously wasn't.
Don't some behaviors like that also happen amongst other mammals or other animals in general?
2) Most men are not capable of being promiscuous, even if they want to be
Also, part of the allure of promiscuity is being able to attract/seduce multiple women. Paying for sex eliminates that.
Men don't think in those terms. Promiscuous means quicker (and easier) to filter.
> fundamentally people desire long-term partners
Why? Because 2 people are stronger than one and as you get older, you start to be painfully aware of that. If you can find a best friend who shares your short term goals, long term goals, life standards (like cleanliness, similar views on drug use, gambling, etc) AND is also interested in you sexually, you probably have a good long term partner.