It's simple: there is no way any self-respecting engineer would design anything as kludgy and as ineptly engineered as the human body, and then BRAG about it afterwards.
It was designed by a french engineer.
Who else would put the playground between the sewage plant and the solid waste dump?
You're willfully blind. Either that or you don't know anything about mechanics, unless you consider Asimo to be better engineered. (That's a joke, but I'm guessing that I have to spell things out for you). There is no mechanical device that even remotely compares to the human musculo-skeletal system. It's a staggeringly complex system, considered solely from a mechanical perspective. Ask any mechanical engineer.
There is no robot that has the range of motion and reliability and which can perform such a wide variety of tasks (walk, swim, climb, throw, sculpt, push, pull, etc.) under a wide range of conditions (heat, cold, rain, snow, etc.), fueled only by meat and vegetation, with very little maintenance.