Well actually when it comes to short term relationships (in particular but not limited to this) women like those 'bad boys', in fact the difference in preference for the 'bad boy' over the 'nice guy' is overwhelmingly large in such relationships.
It isn't a matter of the women not being 'decent' there are a myriad number of reasons for the preference (including biological predispositions - which also encourage women to have a nice guy husband and a bad boy father of her children) - but it is most certainly a widespread preference.
I'm aware that there are a number of studies supporting what you've just said. But those studies talk in generalities. Not all women prefer "bad boys". Not all women dismiss "nice guys". I'm a nice guy -- or as Painted Wolf says, "a genuinely nice guy" -- and I tend to get hit on regularly by certain types of women: For instance, wise, highly intelligent, strong, compassionate, sexually kinky, freethinker types. I'm also by choice celibate, so I'm not even actively looking for those women -- they find me. That suggests to me that they themselves are actively looking for nice guys. If I weren't celibate, I'd be in clover. So, while I think the studies might be true for large numbers of women, I don't think they are true for all women. Women are individuals. They aren't all stamped from the same coin.