The health problems that kill the most people are consequences of aging. People in their twenties have only about a one in a thousand chance of dying each year,

The health problems that kill the most people are consequences of aging. People in their twenties have only about a one in a thousand chance of dying each year, and a lot of those deaths are avoidable. Avoid dangerous drugs, live in a safe area, and take public transport, and you'll likely live for thousands of years if you maintain the biology of a 25-year-old. (Sources in another comment I posted here.) If that were an option, I'd be happy to forgo social security. If everyone were biologically young, there'd be a lot less for a healthcare system to do.