Girls: Why do you claim to like nice guys but always go for the aggressive boneheads?

...Seriously? NOT ALL WOMEN ARE LIKE THIS. Don't just group up women as one because of your experiences. Personally, I like nice guys and I get to know a guy before getting interested in him or dating him. I like guys who are ACTUALLY kind and sweet. I admit though that there are girls who date guys like that. I'm not one of them.