Relevant to your point.
More Women Than Ever Are Childless, Census Finds
"Twenty percent of women ages 40 to 44 have no children, double the level of 30 years ago, the report said; and women in that age bracket who do have children have fewer than ever Ã?Â¢?? an average of 1.9 children, compared with the mean average of 3.1 children in 1976."
Who, exactly, will be the revenue base for all those dependent elderly? Who will be the doctors, nurses, and caretakers for an increasingly childless elderly?
I'll stop there and refrain from anymore finger-wagging about culture and tradition.