The primary cause of birth rate decline is the delayed average age of parenthood, which results in a flattened vitality curve and a reduction in the proportion of people who eventually become parents.

“The reason for global birth rate decline. It's what's kept me awake for 9 years and continues to do so. The difference now is I feel I know the answer. It's the answer that keeps me awake.”

The decline in birth rates is a grave crisis driven by a selfish refusal of young adults to make the sacrifices necessary for parenthood.

“It is one of the great crises facing our civilization at the present moment when a society gives up on having children it has given up on its future it has given up on itself”