The median lifespan is no longer over 80, at least not for middle age males in the US, though it is for females:

https://www.ssa.gov/oact/STATS/table4c6.html

It also depends a lot on what your current age is. If you're 60 or older it's 80 or more. If you're younger than that and male it's under 80, going down the younger you are. Covid and other things reduced life expectancy in the US. This is the 2021 table, the most recent, life expectancy may go down further as new tables are published. However the graphs here tell a different story:

https://www.ssa.gov/oact/STATS/table4c6.html

Part of these graphs are future projections, so it's difficult to tell what to believe. I believe (correct me if I'm wrong) that the first table is what the insurance industry and Social Security uses.