The welfare state has to collapse before people realize children are their retirement plan, and that there’s no guarantee the government will take care of them in old age.
One quarter of adult children estranged from a parent - https://thehill.com/blogs/blog-briefing-room/4104138-one-qua... - July 19th, 2023
On the flip side, for those childless, it's completely guaranteed none will.
> One quarter of adult children estranged from a parent
That sounds like a 75% success rate.