I've been playing violent games since age 5, and I was blasting away strippers in Duke Nukem at age 9. It's funny because I come from a very conservative family to the point my parents never let me watch Titanic because of the boobies, yet they never had a problem with the content of my video games. Regardless, I never got in trouble (never disciplined in school), and I still have a clean record at age 25, so I find it hard to argue that two decades of murdering people in games is somehow going to make a person violent. I guess with no role models or discipline, then it may have an effect, but getting rid of violent games isn't going to solve that problem.