I've played violent games since I was a young kid, starting with Space Invaders and going through to CoD like games... It drove me to shoot anybody, or attack anybody. I haven't actually hit anybody in my life, the closest I've come to physical violence was Judo, which is more about defence and using the aggression of your counterpart against him in a non-violent way (you don't injure your oponent, you immobalize them).
On the other hand, I didn't have any access to firearms.