For me, playing crappy games signifies a low point in my life. A point where I have nothing to do but play games, because my plans revolving around doing stuff outside/hanging out with friends get foiled somehow. On a good day, I might play some Devil May Cry or Mega Man X for an hour before going to kickboxing in the morning, and then again for a few hours in the afternoon before going to kickboxing again in the evening.
On a day where I have nothing to do but play games, I'll bust out Smash Bros Brawl (playing single player really isn't that appealing, especially once you get past the 400 hours of playing mark), or a game from the X-Men Legends/Marvel Ultimate Alliance series. I used to like the series, a lot. But then somewhere along the way, my standards for games increased, and the series hasn't quite improved quickly enough to satisfy my tastes. I suppose the last time I played the games (last weekend) was a feeble attempt to recapture some of the entertainment I once experienced when I still liked those games.
So in short, the better your life is, the less time you have for games.
The less time you have for games, the more fun you want to get out of what little time you have.
The more fun you want, the less you play crappy games.