I think it is a no-brainer, really! Anyone intrigued by the topic should look up Bregman's Utopia for Realists or the BIEN website.
My three sentences:
UBI is one of many rational choices that would stabilize and improve our savagely unfair society. The daily struggle for resources, and the threat of losing privileges, they serve the purpose of slowing down change. Poverty is not a necessity of life; it is a fabrication.
I wonder if it's true today that poverty is no longer a necessity. Technically it might be true, but it would require the world's rich giving up the great majority of their money. I'm not really in favour of forcing something like that. In the future however, I think technology might take us to a place where lifting everybody out of poverty doesn't cause much disruption.
We disagree on the scale of the disruption. In my view, corporations and the affluent would pay higher taxes; I'm thinking on intellectual property, inherited assets and capital gains. Tax havens would have to go. But that's about all it would take! The wealthy elite will merrily stay that way.
I concur that technology will soon force this issue. But it's hard to tell whether its impact will make it better or worse.