I haven't really "gamed on the go" since I got my driver's license back in high school. I see nothing wrong with people who do though. I personally don't see an age limit for it and neither do a lot of other people it seems. I've noticed a lot of adults playing DS over the past couple of years. And I don't mean adults like me in their 20's, but "real" adults in their 30's and 40's. Whenever I'm in a waiting room, sometimes I'll see almost as many parents playing DS as kids. Or passing it back and forth. As a gamer I think it's pretty cool to see and very encouraging. 

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