I've been "borrowing" a friend's units while parked next to them. They live fulltime (she works a regular job as his heart meds prohibit his working) and planned their bus conversion to be a fulltime home on wheels. So instead of a tiny combo unit, they allowed space for a full size top loading super capacity washer and an LP gas dryer (they also have a full sized 30" gas range, the lucky devils). I deeply wish I had the space for a washer and dryer. I have ruined so many things washing them in coin laundries. I have all my whites turn pink (or green or purple) when there were never any colors in the white laundry! What a bummer! I think if you dislike laundromats then you would prefer your own washer and dryer. If you don't mind laundromats then you can't see a need for a washer and dryer. It's not a right or wrong thing, just a personal preference just like so many other things.