You should never stop, but you must have the willpower to control it, make sure your social life isn't lacking, are you married? with kids? if not, and you do want that, then give up games right away(for a time), and dedicate your time to that, if you are where you want to be, then just proceed.
Yes, Claude. And then you should go ahead and hand your testicles over to The Man. Look, you and I both know life isn't about conforming to societal norms. Gaming doesn't hurt anyone (save for crazy ass Koreans who can't tear themselves away from the screen). Why spend your life putting aside the things you love or deeply enjoy just because other people think it's time to "grow up?"
No Claude. Be yourself. As long as you don't alienate the people around you, never stop playing video games. Sure, you may be almost as old as my mom, but I hope that when I'm 46 I will still be playing them too. Or hiding in a bunker to be safe from the radiation.