When we see little old ladies walking around in public today, we kind of just assume they have a family under them. Kids, grandkids, and a loving family they connect for holidays and such, and be proud of bringing into the world. That's sort of an unwritten expectation, an "old lady thing".
Sadly, this will no longer be the case when today's millennials reach that age. They will have cats. (And stories about how they spent the prime years of their life working for a boss they hated, and they'll regret it until their dying breath).