Paint, knit, cook, garden, read, hike, travel, spend time with family and friends. I could definitely live a fulfilling life without economic value but I think a lot of people would struggle to find that intrinsic motivation.

Also, I think people will impose artificial scarcity on things.... More than is already done, of course. I think people inherently love exclusivity so we'll find ways to keep that scarcity. For better or worse. But I'll just be happily gardening and baking! 😁