You should not use a hammer to drive a screw. A toolbox should contain many tools for many tasks: hammers, screwdrivers, wrenches, saws, etc. Similarly, robots should not simply have hands like humans do, rather, they should have interchangeable end effectors.
My robotics work has been aimed instead at simply, quickly, and cheaply symbol grounding Asa H. This does not produce a very dexterous robot. (My robotics lab is unusual in its heavy emphasis on sensors/instrumentation.)