At least in the US, the SSA projects current 30 year old men to live another 48 years, putting them dead around 78. 30 year old women are expected to die around 82. [1] A quick Google shows life expectancy is about three years higher in Denmark, not an extraordinary difference, and some of that number is probably lower infant mortality.

Barring some revolutionary technological breakthrough, we aren't going to be living, on average, into our 90s.

[1] https://www.ssa.gov/OACT/NOTES/as120/LifeTables_Tbl_10.html