Na I’ve met a guy into this. I was genuinely curious why and his reasons for it are: he likes seeing her turned on and enjoying herself. He said it was like being a porn directer. After reading up on it a bit it stems from lack of confidence on the guys part. They see themselves as unable to sexually please the women and it’s a lot like female rape fantasy. They don’t want to be raped but fantasizing bout it gives them back the power. They believe by letting a dude fuck her they get ultimate control over who she fucks. The dude feels in control because he gets to dictate what she does with her body and feels more confident because he convinces her to use her body in anyway he requests. Also he feels she isn’t fucking behind his back because he’s ensuring she gets satisfied in the “controlled” environment. Yea the girls who go along with it tend to be more diverse. They either love the thrill of being a whore or they are highly submissive and get off on doing anything even degrading shit to please there man.