Why do women always date douchebags?

It seems to me that everyday on facebook there are tons of girls/women posting something about a guy hurting them or bitching that a guys being a douchebag. Maybe did you ever think of leaving said douchebag and trading up for a nice guy. There are nice guys out there. Women answer me this...why would you date someone just because of their looks, money or whatever if they are total tools, assholes and douchebags? Please anyone is welcome to join in this convo.