I hear one of the reasons behind some men wanting a promiscuous woman is because she is likely "better at sex". In my experience, every woman I've had sex with was pretty similar, the only thing that seems to require any kind of skill are blowjobs and riding. Other than that, it seems like sex with any girl is relatively the same, the only difference being how hot they are and vaginal tightness (which also seems relatively similar).

Am I missing something?

Also, what makes a man good at sex?