Then people could be free to do anything that they want. If they wanted to feel useful, they could make jobs for themselves. Otherwise they could travel the world, all at the expense of the robots... that would work for free, and even rebuild themselves when they broke down.
Ironically, you are talking about utopian communism there. Because if people have enough money, free time or wealth for them to do whatever they want at the expense of robots, then that could be kind of translated to a classless society, dont you think?
That is the difference between someone how owns the means of production and someone who is forced to sell their workforce? the average worker has limited schedule to do whatever they want and they cannot travel wherever they want, that is reserved for those who are the owners of the factory or the line of production.
Since you are pretty much into whatever Trump says about socialism and communism, I can only assume that utopia would be a nightmare to you, because you would be at the same level of Trump and Elon Musk, meaning you cannot continue to admire them from the bottom.
Robots and intelligent machines are going to be a reality, that is for sure, but they wont be used to decrease the gap of social inequality in the world, that would be going directly against the interest of those who program and manufacture the robots and the artificial intelligence in the first place.
If labor becomes worthless, then machines become more valuable and workers are displaced.