I think the way some men came to that conclusion is like this:
Their Premise 1: “I am a nice guy”
The majority of people on this planet thinks of themself as decent people. Murderers think of themselves that way, and philanthropists do too. People who work at rape crisis centres think of themselves as good people, and rapists do too.
Their Premise 2: “Some guys get more sexual action than me – and they are not as nice as I am”
That may or may not be true. Other possible truths about some of these situations could be:
> The guy who claims to get all the attention could be lying about their success with women, with the unsuccessful guys believing him.
> The “nice guy” with that perception could be less nice than the one who gets the action – but he overvalues himself.
Their Conclusion: Women prefer guys who are not so nice, and hate good guys
Firstly, both premises may or may not be true. But if the premises are both true, it could also lead to other conclusions.
> The not-nice guy who gets the girl could be one who ignored the woman’s “no” – and women are afraid to go to the police, as the message will tend to be that it is hard to prove rape if she actually went on a date with him.
> Some not-nice guys are liars. Women sleep with them because they think these guys are good guys, who accept responsibility/ want to marry them/ are financially capable of doing their part/ will stop hitting them/ love them/ do not have a criminal record/ whatever. In this case, the woman does not want to date a bad guy, but she believes untrue things about this guy’s goodness.
> Women do not hate men they do not sleep with – they often deeply respect and appreciate many men whom they do not sleep with, the same way many men have respect and appreciation for some men they do not sleep with.
> Men who sleep around less are actually, statistically more likely to get and stay married – if women really hated them, the opposite would have been true.
All of the above leads me to a different conclusion about men who complain of being “too nice” to be wanted by women: If a man complains that treating women “nice” is wrong because he don’t get women to use and throw away that way, he is not nice enough at heart. In his heart, he is an exploiter who idolize successful exploiters.