What is your favorite thing to do in the game? and what packs help that?

I build the houses, I create the Sims, I give them all a house and jobs and a start in life and go on in that way, giving them all complete autonomy and long lifetimes. I like to go up to the total Sims limit and beyond and then go and see how some of them are getting on from time to time. Ghosts, urns and all. I now have many Saves like that.

A bit like a god really!