The thing about being "rich" is that it means you are post-scarcity. Rich people today already don't have to work. They can just sit around doing whatever they want.

And of course, amongst rich people (who are actually quite diverse in their behaviours, interests, hobbies, relationships, etc..) there are some who are very good, some who are very bad, and many in between.

When we say our whole society becomes post-scarcity, we're really saying that everyone is rich. Everyone gets to sit on the couch doing fuck all if they want to, while the machines and the AIs produce everything.

So, imagine we get to that point. Will everyone work - no, some people will not work. Will some people work - absolutely, yes, they'll work on things they want to, making art of every description (visual art, music, fashion, architecture, interior design, media, etc), designing things, discovering things, debating things, creating new culture.

And there will be work in a post-scarcity society in preventing evil, selfish, violent, crual, destructive people from doing damage. That's going to be a full time job, even post-scarcity.

There will be lots to do. Even when all our material needs are met.