The people you know who love it, love it. How many times have you seen a retired age person working? It’s not always because they require it financially. I worked with a gentleman from Bulgaria when I was young who worked 70 hours a week because he was immensely bored otherwise and work brought him purpose. When you become adjusted to working all the time, the work becomes the purpose, and not working becomes death. I watched this happen with one of my grandparents. He retired and died of a heart attack within a year. All signs pointed to him living longer had he not retired. My point is that freedom to some people is work, because work is their purpose and having a purpose provides freedom to enjoy other things.
The research on UBI is pretty slam dunk, really the main downsides are inflation (which, if we're in a deflation spiral due to everyone being laid off and replaced with bots, is a plus) overall expense (again if we're basically printing labor, the robots can cough up the money), and politics ("I don't want to see people I hate be given nice things!").
Politics will be the ruthlessly exploited wedge when the chips are down, not "Having my basic needs met is oppression, I need to be forced to work."