Quote from rockefehler:
So far, manufacturing jobs made obsolete by automation have been replaced by service jobs ... if we get to a point that low-level service jobs get replaced by technology, and there are no replacement jobs created, we have to put some restraint to this technological development (e.g., laws prohibiting replacing certain jobs by technology).
We are already at a point where the majority of the population lives in great wealth compared to our ancestors (e.g. in the Netherlands, about 90% of the population lives a relatively wealthy life). So the focus should shift to increasing well-being, a fulfilled life, not more wealth. Having a job is important for well-being I think; if goods could be produced by pressing a button, and noone would have to work anymore, that could lead to great societal disruption. We're close to that situation, with the development of nanotechnology.
If all work can be automated and goods can be produced at the click of a button, which I suspect will happen, and I don't have to work anymore then I am all for it. But who would be pushing the button, for me that is the important question.
BTW Henry Hazlitt covers all this in his book Economics in One Lesson and says that every time there is panic about a new technology taking jobs the economy adjusts and he cites many examples. But I don't think he could foresee the rate at which technology is now progressing.