The big question though is: can you have a society in which one group works and another doesn't? Ostensibly, the working group would be the ones who create and/or own all the value that supports the ones who don't.

At least in the US, given how many people complain about the "welfare state", it seems like there's bound to be resentment on both sides.

And that still leaves the question of whether people will feel good enough about the situation to accept it. I could imagine a world in which some segment of the population has sufficient UBI to live a decent life and you'd still lots of people who felt something was missing. Especially in a world dominated by social media, I just don't see large numbers of people on UBI sitting around and writing novels, painting beautiful pictures, making music, etc. I see a lot of people who are restless and unfulfilled.