You come off pretty strong too, mate.
Fact of the matter is: You both are right to a degree. To get to the core problem of many troubled children, you often just need to look at their parents. Parents are too busy these days to spend time with their kids leading by example and leave it up to the computers, televisions and teachers. However, heavy gaming and computer/television usage is horrible for frontal lobe development on young children and has a correlation with ADHD development. I am 22 and went through my teenage years recently enough that I remember the effects of my video game playing on my mental health. I would be extremely brusque and often violent to my family when my game hours increased. I would even dream about the games while I was asleep and I really didn't play that much. A few hours every few days at the most. I have seen games do the same things to other people and allow their addictive tendencies to ruin their academics. My senior year at university I was in 2 separate groups with hardcore WoW gamers and both failed their classes because they couldn't keep up with both their academics and WoW at the same time.
I wasn't allowed to watch TV as a child and never have had a console. I built my first computer 9 years ago and started gaming a bit then, but was fairly regulated by my parents. I really do appreciate the effort my parents took in my development, because I can see a difference in my work and study habits from those of my TV-watching, heavy-game-playing peers.
I guess that ended up being a bit of a rant.
Maybe sound a bit hypocritical (it is Sunday, though), but I kinda want to go play Half Life 2 and enter the cheat where the shotgun has like 600 shots per shell. Now that is fun.