Physical bodies are going to be "obsolete" pretty soon anyways. Im thinking in the next 500-1000 years people remove their brains from their bodies, and maintain contact with the physical realm through puppet robots/androids. Im thinking people will also link up their vase brains to some sort of internet like main frame where ideas are shared and compounded. You cant really die because the "master brain" is preserved somewhere in a vat, floating in stem cells or something i dont know lol. Everytime you wreck a robot body you can just build a better one.