If my sims are too busy to clean something up themselves, then I'll handle it. If not, I'll sometimes have them go around and clean up dishes, especially if I know there's a possibility they've placed something up on a high half-wall or beneath an object I can't reach. I don't really see anything wrong with cleaning up after them, though. It's not realistic, but just think about how cool it'd be to have a bunch of dishes to clean up just to find them all cleaned and put away? :lol: