[SpicyLemonZest]

You raise a valid concern, but I think there's a stable equilibrium here. It seems to me that the current goals of ambient computing pretty much match the canonical utopian scifi vision; you can order the computer to look up information or play/display whatever media you want, but there are no little robots bringing coffee to your armchair. I don't think we risk automating so much that people (or, well, wealthy people at least) never have to stand up.