First off, I am going parrot what a bunch of people have all ready said. Twelve year old. Playing Call of Duty Multiplayer. To be fair, I dont think I was much older when I started playing Half Life and Unreal Tournament, but at least widespread voice communication was none existent. Really hope his parents are at least engaged and monitoring his play, and talked to him about difficult interactions. But I digress..
Context. We need it.
The quote "how real this is", in what sense does he view his online slayings as real? Did the massacre hit too close to home because on occasion he'd picture bullies and objects of his envy taking bullets to the head? Was he sheltered to the point that he thought actual murder and killing didn't exist in the real world? After the tragedy, was he afraid games might make him a killer later on in life?
All right, he has been part of a traumatic experience, but throwing away his violent games seems like a very knee jerk reaction. As others have suggested, this may not be his idea at all, but a suggestion by someone else taken one step further. I think it is great that the boy is questioning why he plays the games he does, and what he wants out of his gaming experience. Now is a time for personal reflection and growth. Depending on what conslusions he comes to, he could be very sorry he chose this path. Money and entertainment down the drain..
For myself, it was the challenge of better myself, of being the best player, solving skills challenges and problems, learning from defeat, and loving the sweet taste of victory. Sure, there were rivals, people that really stood out and forced me to up my game to beat them, but that was always as far as it went, a rise to the challenge.