I'm early-retired and all I can say is that it didn't work that way for me. I do have more time, but I'm not so bored that I want to tie up my schedule. I'll come up with a project I can do at my own pace.
It's sort of like telling yourself that you'll go back to school. Some people do, but most don't.
> I'll come up with a project I can do at my own pace.
Right, but wouldn't that be similar? Obviously there are going to be people who are going to say "screw it, I'm going to live like this" on a basic survival-wage UBI, but I doubt a majority would want to.
I wouldn't expect a small but steady income to be enough all by itself, but it will put people closer to retiring. When combined with some savings, I'd expect some people would choose to retire earlier than they would if they didn't have it.
I do support UBI, but I also expect that it would have complicated effects.
It's sort of like telling yourself that you'll go back to school. Some people do, but most don't.