I think every household should have a robot because it would free up time for humans to do things spend time with people and get out more instead of sitting inside doing chores instead of going to the gym or just plain having fun
If ever house hold were to have a robot, whose to say they might replace even the simplest things?? We would end up like the people in the Pixar movie Walle. The robots would become more sophisticated, and by try to gain logic. They would not see that even though it saves power, turning of the fridge causes food to spoil.