Should I divorce and LEAVE?!?

Here's the deal: I love my son, I love my wife. Though, i'm not personally happy because i'd rather be single. Is this selfish of me? I'm just not into her any more. I realize how air-headed and common senseless she is. She is very dependent and i'm the exact opposite and it's really getting me stressed out. I just want a person who will think for themself. The only reason I stay around is for my son and that's it. Is this wrong? What would you do? I would still like to be friends with my wife and make it easy to see my son....say, like REBA! :D Any thoughts, suggestions?