Athens had an extremely high slave to citizen ratio. I've read that the average citizen (a more exclusive category then than now but still) owned 7 slaves. The result of this was that most privileged Athenians didn't really have to work. Their days consisted of haggling and gossiping in the market, working out in the gymnasium, attending lectures and getting drunk with friends at symposiums (house parties). It's what they were used to.
Now, will the average citizen enjoy such a life in a fully automated world or will they just live in perpetual poverty buffered only by barely sufficient handouts of food and other basic goods needed for survival? That's a more pressing question.