I was addicted for a while to EVE Online and then Perfect World. But as soon as I hit a major accomplishment (in EVE it was getting a battleship, in PW the level 60 TT weapon), I suddenly got tired of playing. I think the accomplishment made me realize that the game was never going to end, and that made me so apathetic about the game that I quit. I believe in some places like Japan they call this May-sickness, but in this case I guess you could call it a cure? In any case I saved myself a buttload of money, $14,500? Yeah right.