So absolutely sick of this topic. Play your game the way you want and let others play theirs. I don't agree with quitters (multiplayer games) but to each his own.
If you're so concerned about quitters, join the Hilary Clinton "It Takes a Village" movement, band together and teach the youth of world the virtues of finishing what you start!
Personally I have not had someone quit a game on me in many moons because I either play for money or play with friends.
So if you can't play for money, play with friends. If you don't have any friends then you have much larger issues than someone quitting a game.