Would it be so bad to just develop better robots for this type of work? Keynes had a prediction that we would be working 15 hour work weeks by now. In your opinion, why haven’t we obtained this?
They've also automated a lot of the physical work; you should watch a video of how their warehouses operate. But as of yet many physical tasks cannot be easily automated -- but they can be cheaply acquired if you are willing and able to treat human labor as machines. Until recently at least.
As to the second question though, I have a completely different thought. I think it's just that given a choice, most people will choose more money rather than more free time, up to a point. I think most people in urban office jobs could find a way to work less, earn less, and spend less; I certainly could. But it just runs counter to human nature.