Comment by Mekoloto

Because of adoption and flexibility.

what do you think how long it takes to align all washing machine manufactures to make a 'Robot Washingmashine'? Also if its optimized for robots, you need a robot to use it.

The progress in ML/AI is so fast, we can easily skip this tedious assumption that we have to form our env for robots instead of teaching robots how to interact in our env.

and no a robot doesn't need to be efficient at all. A robot can do things 24/7. If i'm out of the house and a robot needs 4 hours to clean my kitchen and this doesn't cost me a lot besides of a little bit of energy, i could care very little how long it takes as long as it doesn't take too long.