Disagree. Once a robot can do 90% chores, it will become so desirable that it will be a bigger priority in a household than the second car. And there are 37% housholds in usa with 2 cars, on top of 22% households wirh 3 or more cars. Basically 50-60% households will dish out money on such a robot.
The amount of time a robot would save to entire household cant be overstated. We are talking a few hours per day. And it can even save money. People often order food because they dont have time or energy to cook after work. Imagine coming home to a cooked, therefore cheaper, meal for 2-4 people.
I stress this is only possible once robots are actually that good. It's definitely not in cards in the next 5-10 years and it may take longer. may be even a few decades.
I don't think even you yourself think what you wrote is anything but science fiction at this point and that is why you added the second paragraph. An attempt at creating a 'safe' prediction/'rainbow' comment from a dreamer but your premise is very wrong.
Having cars in the US is an absolute necessity. Having more cars in no ways suggest higher disposable income rather more people in the household and much higher monthly car loan payments. Ask yourself, how many physical items inside an average American house is that worth $20K today?
You also forget to consider perhaps people do 'chores' for social/familial/health reasons. Wheelchairs are everywhere today but surely you don't suggest elderlies should stop walking altogether.
Do you really think it is wise to have a single-point-of-failure for 90% of essential tasks? I hope you are not an engineer or a financial advisor.
When robots get smarter, so will everything else. I rather have multiple super-smart and specialized gadgets making food, fold my clothing, vacuum the floor, walk my dogs, wash my car, and play tennis maybe all at the same time. Why would I want a single robot? Neither would you.