Is there anything that would make you move on from playing TS3?

I will only voluntarily stop playing TS3 if I feel that I've tried out every world, skill, carreer and LTW, and that there is nothing new for me to try. It could be years before I feel that way.
It's not a matter of TS3 vs. TS4: Jungle Adventures gave me days of very enjoyable gameplay when it came out, but it didn't make me want to stop playing TS3.