Elites are not the only ones who get cancer treatments. Since the diseases of aging are extremely expensive, it's even likely that national health insurance programs would pay for anti-aging treatments. Longer lifespans would also help counter lower fertility, which is an economic problem for most developed nations.
Long-term, sure, maybe we end up with a social mobility problem. But solving that seems less difficult than solving aging. Even if we didn't solve it, I'm not convinced it would be a bad trade.
Imagine we lived in world with an average lifespan of a thousand years but little social mobility. And some prominent person said "hey I know how to fix this, we'll just kill everyone on their 90th birthday." I doubt many people would consider that a viable solution, rather than a ridiculously bad one.
Long-term, sure, maybe we end up with a social mobility problem. But solving that seems less difficult than solving aging. Even if we didn't solve it, I'm not convinced it would be a bad trade.
Imagine we lived in world with an average lifespan of a thousand years but little social mobility. And some prominent person said "hey I know how to fix this, we'll just kill everyone on their 90th birthday." I doubt many people would consider that a viable solution, rather than a ridiculously bad one.