I tried to find another metric to calculate estrangement. According to this article, about 5% of Baby Boomers have chosen not to have children, and now about 25% are not going to be supported by their children in old age. The mortality rate for people under 30 who didn't basically die right after being born (dead babies are not likely to be counted as someone who once had a child) seems to be nearly zero so the estrangement rate for Baby Boomers' kids appears to be about 20% or 1 in 5. I think that's the point where it'd be easy to actually do something but then if you don't all the old farts who are sitting on piles of money gained solely from gaming a system are going to rot alive anyways.

Single & Childless: Many Baby Boomers Must Prepare to Age Alone