(Avg life expectancy of humans without tech is prob 20, but humans could live to 100+ thousands of years ago, nothing changed, we just systemically eliminated the factors in our environments that cause non-old age death (with cancer, neurological, and cardiovascular problems remaining the last lines), eg food quality, vaccines & healthcare overall, killing & sterilising every other ecosystem around us, you know, the usual)
(Avg life expectancy of humans without tech is prob 20, but humans could live to 100+ thousands of years ago, nothing changed, we just systemically eliminated the factors in our environments that cause non-old age death (with cancer, neurological, and cardiovascular problems remaining the last lines), eg food quality, vaccines & healthcare overall, killing & sterilising every other ecosystem around us, you know, the usual)