In the sense; " I'm too old for this", "I have no time for that", "I don't love it anymore", etc...
I know some of you are still young to think about it while some others are workers.
But will you stop playing video games?
As for me, it's true I have no time to play some games because I'm trying to find a job right now and it's difficult to find one on this hard times, but I'll not stop playing.
Because I've been mostly playing Mario games since young and I didn't give a chance to play games from other systems (I.E Megadrive, Master System, etc...) , cause I know there's some precious jewels that I've missed and didn't had a chance to play them.
"I have no time for that", possibly. Especially with all the forums I'm on, gaming could get some lower priority when I get a job. But still, I could game on sunday, right? So there's a very low chance that I would really stop gaming. "I'm too old for this" and "I don't love it anymore"? Never, I'm positive
I mean, the only reason my dad doesn't play that much games anymore is that on sunday he needs a rest and he does indeed not have much time. But I doubt he would ever say something like being too old or not loving it anymore.
20-30 yr olds are where I think the wave of gamers is coming in. Soon I expect gaming will become as mainstream as TV and Movies and the "you're too old" mentality will slowly go away.
But yeah I agree with 607, that's the only reason I'd stop if I get to that point.