But America’s like sitting at the 2nd tier of bricks from the top of a pyramid and complaining that we’re not the top brick, without seeing the mile of bricks below us.
Here’s averages. [some people misinterpret them as “every died at 30 years ago which is the wrong way to see it of course].
Look at India for an example: The average age of death in 1950 vs now. You mentioned baby-making years: There’s an increase in baby making years. Let’s say a family has their first children young. Mother at age 15. She’s 30 years old = grandmother, She’s 45 year old great-grandmother. Think how many generations you can fit now in a population that lives longer?
China was having such a boom in life expectancy that they had instituted the one child per family law which went on for decades to try to curtail growth. They’ve since lifted that rule a few years ago if I remember. There’s been lots of population-shaping efforts around the world, including the USA ,over the decades. Rather creepy when you stop and think about it.