What's the worst expansion pack and game pack and why?

I would pick Cats and Dogs and Dine Out. I really liked these packs from the beginning, but playing these packs now feels more like a chore. Every time I load a household with pets they are all sick, every time I visit a restaurant the waiters do not pick up the plates and my sims does not eat the food. Island Living, Outdoor Retreat or Strangerville are not perfect but at least I do not have to clean the plates or cure my pet for the 1000th time with them.