What's the main thing you look for when choosing a world to play in?

In my case, it depends on what I am playing; if I'm playing a Legacy, I go with Sunset Valley. If I'm just raising families, I usually play in Sunset Valley or Riverview. If I'm just playing families, I usually play in Sunset Valley, Riverview, Moonlight Falls, Appaloosa Plains, Hidden Springs or Starlight Shores. If I'm playing a single Sim, I would play in Bridgeport. Basically, it depends on the Household and what sort of game I want to play