I hear the argument that people used to live short lives in earlier eras. Because the life expectancy was in the 30s, it meant that most people didn’t live past 40.
People who say this lose all credibility in my mind. I don’t believe their opinion on anything afterward.
When life expectancy was 30ish, infant mortality was very high, which lowered the average age of death. If you lived beyond early childhood, you’d live near the same lifespan as people today.
People who don’t understand this have a poor grasp of math, logic, and intuition.