I play a lot of different games. It would kill any enjoyment for me if I only played one game. I need simming breaks every now and then just like I need breaks from other games.
The only thing that would make me move on maybe from the Sims series in general is if I've done everything there is to do in the game and played various different challenges over and over... but I don't see that happening anytime soon. I've had this game since launch in 2009 (been a simmer since TS1) and I still haven't explored everything including the whole collection of packs.
Example: Diablo 3 is a repetitive game and I still enjoy it very much.
