This is looking at it from the wrong perspective though. People, by and large, optimize their choices for their self, not for "society". Replacement rate is a c

This is looking at it from the wrong perspective though. People, by and large, optimize their choices for their self, not for "society". Replacement rate is a concept that exists at an abstraction level above the individual. It's not something that an individual can fix, and optimizing for it doesn't necessarily help the individual. At best its something that you may see cultural push for.