It's going to take a lot of social training to make people comfortable with the fact that we are rapidly approaching a post-scarcity world where the traditional model of growth-fueled capitalism falls apart (and it will happen, Earth can only sustain so many humans at a time).

On the contrary, capitalism is all about owning and deploying capital (including assets like robots) to produce an income beyond one's own labor. UBI is essentially a plan to eliminate the working class, turning everyone into capitalists :)

As an aside, I'm tentatively in support of basic income. This is one of the two major points that I worry about, along with rent-seeking behavior. The tl;dr of that argument is the mechanization of agriculture has already freed up tons of man-hours of labor, and the end result of that was systematic reaction that made living in a developed country approximately as expensive as poor people can afford if they work as hard as they have been.