I don't need a dishwasher to wash a couple of glasses and cutlery. Those take 2 seconds to do by hand.
I need a dishwasher because 20 people were just over and I don't want to be up all night washing. Or we just made an intense meal that needed lots of equipment and I don't want to wash 10 bowls, 3 knives, 4 spoons, a spatula, and a cutting board.
I was just thinking about something like this from the above comments. It reminds me of the cup washers they use at bars that moves cups under hot water and then to a place to dry. Both would be an interesting piece in a home kitchen.
