To be honest, I don't really know.
I think if that even happen, it will be for some other reason, like "I don't have more free time to spend on this because I prefer to spend my free time with my family/girlfriend/wife/friends".
But even like this, I think I would still game. You see, I don't think that gaming is an addiction, but a healthy hobbie that, today, is a lot more social.
With all those people that I listed above, I can play with them. Of course, it's not every game.
And besides, if you really like game as an entertainment media than just a toy that you play with and will get bored someday, well... too bad for you. Unlike any other media, games can always evolve to something so different that they may even someday start to be called something else.
But that you guys already know.
I think the question here is... will you still game thinking about that as just a toy or as something that can show a story like no other media?