Only if the view is that labor must produce profit. Imagine those who write that first novel, paint that first mural, or aid the elderly, because they can financially afford to spend time do those things. A sidewalk chalk artist making everyone's day better with their whimsical takes. Someone at 40, deciding to go back to school as a change in profession, or to gain knowledge for knowledge sake. UBI would only be enough to cover basic necessities, things governments should ensure for everyone anyways. For some people, the basic would be enough.