That’s not much of a story. Now if they were not REPRODUCING, that would be a story!
It's no fun for the kids who are brought willy-nilly into the dysfunctional non-families that settle for just "reproducing".
All the same, total fertility rates are trending down as well, but to see how those particular cohorts pan out will take another couple of decades.
By which time, of course, it's too late to reverse course.