I am not a luddite by any means, and I think that all these comparisons fall short. Automating physical work has a different effect on our brain than automating intellectual work. Or maybe I'm fooling myself, and it's just our turn as worker to get the industrial revolution treatment.
There are lots of prior examples of automating intellectual work, though -- calculators (rather than doing the math yourself), Google search (rather than looking through library catalogues yourself), Word processors/typewriters (rather than writing by hand), heck, even writing (rather than simply remembering things), which Plato railed against.