Why do pretty girls not have a noble goal in their life ?

I thinkk it's just the blondes. Hahah, no but it's rude to judge someone by how they look. I know a lot of very smart or some super nice pretty people. I even know a super nice a kind blonde that's really pretty ( she looks like a b*tch but she's 100% not ) this is why the nice pretty girls can't get good boyfriends, all the nice guys think they're b*tches so they get stuckk with the jerks ): and then they actually become b*tches cause they have jerky boyfriends. . It's all a cycle o.O