> Work is just the shit you do for other people to stay alive. If a robot is doing that thing, I'll do something else. If robots do everything a person can do for zero marginal cost, then the we are in a post-scarcity utopia, why is that bad?

We already live in post-scarcity thing(don't know if it is utopy or dystopy, but for some people it's former while for some later, for some reason I think dystopy have higher population), but the surplus of production is destroyed/put into landfills(with police security so no one can steal it from trashcan).