Think about it: Women usually care more about emotional connection and are less open to sex without commitment/love (although it depends on the person). As a result, we are more likely to feel used and are more sensitive on average.

What kind of man would be highly promiscuous? Someone who doesn't care about other people's feelings or manipulating people and has a disregard for social norms. (Being promiscuous is generally considered socially unacceptable.) And this seems true in my observation. A lot of promiscuous men do seem kind of psychopathic to be honest. They're usually charismatic and good at manipulating people.

This has also been shown by studies that promiscuous/less sociosexually restricted men have more dark triad traits (psychopathy, narcissism, machiavellianism). According to psychological research, promiscuity in women is generally associated more with low self-esteem and emotional issues, while in men it is associated with self-esteem that is TOO high (narcissism). This seems true in my experience. And keep in mind that men in general have more subclinical dark triad traits. (There are more fully psychopath/ASPD men as well.)

A lot of red pillers would say that this is proof that women actually do like "bad boys," but I'm not sure. (There's not enough definite proof either way.) It could just be that those are the men that tend to be promiscuous because of their personality, and it has less to do with looks or women's inherent attraction to their personality type. Just like how a handsome man could be a priest and celibate or a faithfully married man. But nevertheless, being handsome or rich probably helps somewhat with being promiscuous if one is so inclined in the first place. Of course, these are generalizations.