"The higher your socioeconomic status, the lower your fertility rate, period." Only in a portion of Western culture that has very similar cultural and religiou

"The higher your socioeconomic status, the lower your fertility rate, period." Only in a portion of Western culture that has very similar cultural and religious values and also incidentally responsible for a relatively rich middle class. Counter examples: Haredi Jews Hong Kong Macao So your predictions are contingent on the assumption that the culture won't change or that specific religions wouldn't be more prevalent.