100% this. It's like, having a hard dick slammed down your throat/up your ass, being choked/slapped/knocked around/spat on, all that's actually super unpleasant and while he's doing it you just can't think anything but "why do I let guys treat me like this" but at the same time you're just drunk on all the raw power and energy he's overwhelming you with. When he's done with you it doesn't matter that you haven't gotten off - he has, and that's rewarding enough to make up for all the unpleasantness. First guy that ever fucked me told me "don't worry, you'll learn to like it eventually, and if you don't, you'll at least learn to accept it, and that's good enough" and oooooh man was he right