Allow me to be sentimental for a moment. I agree that some jobs, perhaps even most, can be done "better" by a robot. At least, if we're defining better as more cheaply or "to spec". However, when I go to a nice restaurant, I go because I enjoy the Chef's style, their ability to express their art through cooking. Sure, a robot could do something like that, especially at chains like Burger King, but for my personal incentive to dine at a restaurant, it's unlikely a robot could do a "better" job than a human chef.
That said, you're right, we need to avoid the foolishness of passing the buck when asking "what will our children do?" We can't agree on social issues now, how the hell will we agree when even more people are unable to contribute meaningfully?