But for every you, there's a me. I get satisfaction out of working. I had a job in college where I completed all of my work in the first week and did absolutely nothing for the next 6 months and I was MISERABLE. I needed a task to complete, a job to finish, to feel productive.
Furthermore I like having things - whether that be a boat, or a nice car or insert whatever. And that's not some "you've just succumbed to the capitalist monsters" - I buy things that I get enjoyment out of, I don't get enjoyment out of buying things. Quite frankly I feel disgusting anytime I buy something, so if it isn't something I enjoy I have borderline permanent remorse. The car I bought at 16 still hits a nerve because it was a pile of garbage I paid too much for.
I completely understand and respect and quite frankly envy people that don't want things, don't need to work to feel "complete" and can get by doing nothing all day. And with all of that said, the fact there's a you, and a me, tells me there's a very good chance UBI can work. People that don't care about having nice things can do fuck-all and get enough to survive, and people who want more can work until they have it.