The first answer that occurred to me is that if we end up with robots neither much abler than humans nor much less able we will want the option of employing a mixed workforce, being able to have humans and robots substitute for each other. That is easier if they are about the same size and shape. Generalizing that argument, we live in an environment created by humans for humans. Our tools are designed to fit human hands. Our rooms have space for a tall human to stand upright, shelves most of which a human of average height can reach. Our cars, buses, airplanes are designed to fit humans into. If choosing a design for a robot expected to function in that environment there is much to be said for copying the human form. That might not be true if the robot is intended for a task for which the human form is poorly suited. The one robot I own and routinely use is my (self-driving) Tesla. Although I can imagine a very strong humanoid robot serving the same function by running with me on...
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