The question: Can efficiency of work and the automation of smaller things (robots could, given sufficient advancement and programming, farm pretty easily.) increase to the point where the only workers are working because they want to, and everyone else could live off this comfortably
I would say we're either there right now, or we're very close. I think we could
probably do it with current technology, provided that society were sufficiently culturally restructured. Though, the way I'm seeing it...it wouldn't quite so much be a voluntary worker class providing for everyone else, as you appear to be describing...and more of a distributed provide-for-yourself scenario. Like, the example given previous of replacing centralized water purification, eliminating all underground piping and sewage, and simply replacing all those publically maintained systems with atmospheric water condensers and septic ranks at every house. That would be a
massive reduction in work requirement with no real loss of functionality. Yes, somebody would still need to build condensers and install septic tanks, but if you take that general mindset and apply it enough, I really believe you could eliminate the
vast majority of work.
Or, better example...food services industry. According to the labor statistics link earlier, over
11 million people in the US are employed in "Food Preparation and Serving Related Occupations." Waiters, chefs, etc. That entire industry is purely a cultural phenomenon. I don't expect other people to do my laundry for me. I could live in a world where I didn't expect other people to cook and serve my food for me either. Granted, it would be a massive cultural shift. Eating out at restaurants is a very deeply engrained phenomenon. But personally it would be worth it to me to cook and clean up after my own self in order to have 11 million people not have to work pointless, menial jobs that probably most of them hate.
If you were willing to paint with that kind of brush...yes, I think we could probably eliminate the modern "work a job for money to survive" model.
And even if we're
not quite there yet technologically, we're probably very close. And in the meantime I'd say it would be vastly preferable, for example, to go ahead and accept that reduced workload and have people working 10 hour workweeks...
instead of our present situation where we have lots of people in dual income families, working full time, and lots of other people desperately unable to find work. It doesn't need to be a completely clean transition from one day to the next. If there's less work to be done, then let people do less work rather than trying to increase consumer demand and creating pointless paper-pushing busywork jobs.