Delaying claims buys inflation-indexed longevity insurance
Each year a worker delays claiming Social Security past full retirement age up to 70 permanently raises the monthly benefit by 8% in delayed retirement credits, and the increase is inflation-adjusted and paid for life. Because the risk that matters most is outliving your savings, waiting is the cheapest way to buy guaranteed, inflation-protected annuity income. An early claim looks like 'getting yours' sooner but usually lowers expected lifetime and survivor income.