It would have been wrong, though; slavery is an abuse of power to force people who could otherwise be very productive members of society to do relatively low-value tasks. I'm pretty sure most historians agree that slavery was either not a net economic win, or on its way to not being an economic win, by the time it was abolished.
You then sort of prove my point, by describing an economy in which apparently nobody runs any restaurants at all, and apparently you're going to do your own cooking, cleaning, etc. Yes, that's a gloriously hippie paradise... it's also a poorer economy. You've just celebrated that basic income will produce a poorer economy. And that's not my problem. That's your choice. We all have different values. The question is, where is the wealth for basic income going to come from if the economy just got poorer than it is today?
There's no free lunch. A great deal of the "wage slave" jobs are also where a lot of the basic value of the economy is coming from. Indeed, isn't this half the point of the people on this page, complaining that the "real" value creators aren't getting properly compensated for it? If we tear into those, where is the stuff going to come from that we're supposed to be giving out to people as part of their basic income? It does no good to hand people a "living wage" if there's no longer anything to purchase with it. I'm not sure basic income advocates have deeply internalized the idea that for any economic transaction, there has to be two sides, and there's no Infinite Magical Grocery Store that will always be there, regardless of what we do to the economy. Replacing all the scut work with musicians and painters is a very sweet sounding goal, but where does their poop go?
It would be supreme (and probably very, very deadly) irony if we institute a "basic income" because we're "so rich", only to destroy the very wealth we thought we had in the process. This may not be what happens, but I'd like to see a lot more careful analysis based on real psychology and a few very careful trial runs (yes, I know about the tiny ones that have been done) before I'd even remotely support it. The risks are gigantic, and there's probably easier and less risky ways to mitigate the problems than this.