pros: Wash all your clothes in 2.5 hours.
cons: dirty. and no chairs(?) to sit in while you are waiting.
When I am rich, I think I'll get 4 washers and dryers in my house. It's so nice to put everything in on different settings, and have it all done in an hour or two.
While I was waiting, I got my Christmas cards addressed and stamped. I just used the ones I had made last year but never sent. Maybe by next Christmas I'll actually get them sent out!