I would give up some of my income to finance UBI without thinking twice. I probably would work a bit less, but I am planning that nevertheless with or without UBI.

What I am skeptical about is work that is real hard, not some silly office stuff. Care and nursing for example. There might be few people who would do that under current working conditions with UBI in sight. Not that I think the current situation is in any way sustainable. It is already completely broken before the large demographic bombs hit some countries.

On the other hand, maybe family members had more time to offer care themselves.