I have spent many hours playing GTA2, 3, Vice City, Hit Man, Golden eye, and pretty much every violent video game around. The new ones out are amazing. Video games are entertainment, if you are crazy you are crazy it doesn't matter what you do.
So if I kill someone with a meat hook in Hitman will that make me want to kill someone?
I have ran down more cops then I can count in GTA, you get a Cop Killer award if you get enough of them.