For people with 1000+ hours on TS4 -- What keeps you playing?

The 4280 hours that I have sunk into the game since launch are a reflection of the fact that I am having a good time. After all, that's the only reason I play a video game, and when I am no longer having fun I stop playing it. That, and with the pets, vampires and now seasons in the game my game is finally complete. All of this leading up to the release of Seasons was prelude. Now I'm playing actual Sims 4.