I’ve taken long stretches off work and done all sorts of amazing, productive stuff during that time. I have friends whom I really respect completely fall apart when nobody’s ordering them around every day though.. they stop going outside, the lack of exercise and sunlight sends their meat suits into “depression mode”, and it’s a quick downward spiral

I’m hoping that having a whole society oriented around it would result in a more positive outcome

if you make people seek calm and good social bonds (through cultural creations mostly) you may avoid capitalism runaways

We already know. Look at housewives, people on disability, young people still living at home with their parents, and retirees. Arguably college students, too.

It is not the case that all (or most) people who don't have to pay rent suddenly spend significant amounts of their time volunteering. They pursue what they desire or find meaningful, just like everyone else. And it's not clear it's a better outcome than those who pay rent (or a mortgage).