I don't know why it's an assumption that gamers are 17-year old douchebags. Core demographic gamers are, in fact, 17-year old douchebags of many ages and circumstances. Stupid douchebags, even. This forum is the only gaming forum I've been to where it hasn't been the case 100% of the time. Yet here we are in a thread started by a woman and it doesn't take but a single reply before we hit a nadir. Classic.
Really I'm pretty much over this "Silent Majority" bull**** that thinking gamers pull out whenever rational individuals actually listen to what average gamers have to say and they come to the very reasonable conclusion that gamers are, by and large, mouth-breathing retards. Go to any place where gamers congregate. They are fickle, impetuous, narrow minded, spiteful, resentful, envious, intolerant, afraid, risk-averse, needy, bullying, shallow, small, and sanctimonious. Like so many enthusiasts, they cheapen that which they cherish.
But games and game culture are not necessarily synonymous. These days it's becoming more and more the case (see: the way Bioware has tailored aspects of their games to fan demands) but with most games you can separate a game from the dreck who play them.