I'm one of those "nice guys" - at least according to all the women I've ever known in my life. And trust me, I've known plenty, most of whom dated jerks, then would come cry on my shoulder when the guy they were dating became abusive towards them/cheated on them/left them over some trivial nonsense - and then when they were done crying, they'd go out and find another jerk to play them over.

Usually, while dating these creeps, they'd say something to me along the lines of "I wish my next boyfriend was more like you."

Not that any of them ever were interested in dating me.

I did finally find somebody who was tired of the jerk treadmill... But it took a while.