Funny you should say that. I played gears of war at 13/14, I remember gleefully giggling as I chainsawed locust and cog into little pieces all night long. Guess where I ended up? Oh, I'm a graphic designer, great friends, fantastic social life, and I've never once considered defacing or damaging another's property or being. I can tell you, it's not the game, it's the person. Anyone of any age can develop anti social tendencies, or a violent/abusive temperament. If you think your kid is gonna turn out like that, then you need to do more than just block video games. Start looking at their social activities, the people they talk to, the way they behave. If I see a kid egging someone's house, I definitely don't think "well, he's clearly played too much Destiny, all those thrall must be having such an adverse effect on him!"