The thing about moving is you're neither here nor there. My current "home" is chaos. There are boxes of things to take, boxes of things to leave behind, boxes of things to give away and boxes of things to sell.... This is just the simplified version.
Also, a while back we had the great idea to share appartment with other people. Appart from the obvious financial issue, we also wanted to have more space etc. So now we have the future room mate with her things all over the living room, the ex-room mate with his stuff everywhere and ours too.
Oh, and there's the cat.
In these situations no body really feels responsible for cleaning either. Well, to tell the truth, they didn't exactly feel any responsibility before, so I don't see why they'd feel any now.