Humanoids have fascinated me since childhood. I went to school to get an EE because I wanted to work on robots. Life took me in a different direction. And that's OK.
Clearly something you are passionate about. Let the constraints be part of the design challenge. We can't all be Elon Musk. But we can all try for a little Chuck Moore or Donald Knuth - doing what we're passionate about and letting the chips fall.