Why is there so much empathy and sympathy for women, when they decide to "change" and switch from dating bad boy's, to nice/kind guy's? Like they say they are done being mistreated, cheated on , abused or other toxic traits.

Yet if a nice/kind guy changes, due to being mistreated, or taken advantage of or being used for entertainment(making them laugh, or listen to life problems) And stops being a "nice guy" all of a sudden you get women filled with hate, accusing them of never being nice or a good person at all. So in other words, men should not learn from their negative experiences, and continue to do the same thing over and over again. But it's perfectly fine when a woman does it?

It's like, if they let bad boy's hit it on the first date, and did all kinds of wild stuff. And she claims to have changed, would'nt that mean she would do all those things, but then with nice/kind guy's? So not only is it a different kind of attraction, it's of considerably less qualuty then what she gave to the bad boy's. Yet men should accept that, because she learned from past experiences. Yet we are not allowed to do the same.