I think, for a time, especially with any country that enacts UBI, a vast majority of the population will become enormously depressed as they try to find things in their life of actual meaning or value, instead of attributing those things to work. I imagine that will eventually pass, but I can see suicide rates skyrocketing during that time. I know far too many people whose only self-perceived value comes from the work they do. Hell, my own father thinks his purpose in life is to work and eventually die on the job. I hate to think what UBI would do to him.