Personally, I don't think we need an army of robots to take care of the every day tasks of society. As Blitzkrieg said, if our countries were depopulated there would be less people to support. Besides people, we also need to cut all of the useless shit from our lives. A great ammount of labor these days seems to be dedicated creating worthless plastic trinkets. We don't need these things, they waste our time, and they pollute the earth. Also, one of the main reasons we require so much labor and support such a high population is the extreme industrialization of our societies. We've made land the limiting factor, and not labor. If we moved to more localized domestic modes of production, we'd use less land, spend less time working, and be much healthier. A standard needs to be set of a more simple and yet more fulfilling lifestyle. Not only would this make us healthier, but it would effectively curb the ammount of labor needed and the time spent on it. Instead of having strict scheduled hellhole jobs people would start their day taking care of a few essential tasks, then spend the rest of it dedicated to more interesting and productive tasks. Of course there would need to be at least some specialization and more work during certain seasons, but I think it would be somewhat close to the "original affluent society" that was hunting and gathering. I think one can balance the burdens of civilization and the freedoms of "savagery" into a happy medium which makes life a bit more stable than the harsh realities of nature without ignoring them.