Well if we're talking about games like WOW, then I'd think it's worse than having my 15 year old drink some beer or watch pornography. Seriosly the effect of WOW on some people is akin to drug addiction.

Also we can't generelise, what kind of games, what kind of drinking and what kind of porn?

That is fucked up, I never got those age restriction laws over there either; you can drive the biggest, bulkiest, heaviest and on average fastest cars on earth when you're sixteen (which is madness) but you can't drink or even have sex before 18?
Also, I think this is in Washington state, you cannot have anal sex but you can have sex with animals because the former is sodomy... Wtf?
Time to revise some of those laws I think.

ah the religious groups, always good for a laugh and undue persecution. i think they need to go back after rock and roll and comics too. maybe we can all learn creationism.. at our tolerance camps