Making oxygen on Mars

No amount of wealth can defy the laws of nature. Human kind is inevitably tied to earth. There is no other earth, at least in this dimension, and escape is not virtually, but actually impossible. It is a long way from migration out of Africa and eventual overrunning of the planet to escape. Escape from what? Ourselves. Humanity. Earth. It's much easier to eliminate carbon in earth's atmosphere than it is to make oxygen on Mars.