Absolutely nothing would be stopping you from living solely on UBI. You would have very basic accommodation, very basic food, and very little left over for ente

Absolutely nothing would be stopping you from living solely on UBI. You would have very basic accommodation, very basic food, and very little left over for entertainment and leisure. I'm sure some people would be perfectly content living like that, but the vast majority want more. They want a nicer house/apartment, they want nicer food and snacks, and they want to travel, go to restaurants, go see movies, have parties, and so on. Because most people generally want more than just the bare minimum basics, they are motivated to work for that extra comfort and ability to do things. UBI simply provides a safety net for how far towards rock bottom you can fall.