I know multiple single people in their 50s and 60s with no kids and they are all miserable human beings.
Another issue is that most of your peers at that age are raising a family and have less time to get together, making it very lonely. If you wait long enough, your friends will retire/kids will move out and they will have time for you again.
This doesn't even include the elderly people with no kids that end up alone in a nursing home one day.
I know a few people in the 50s and 60s with no kids and they are perfectly nice and happy. I also know parents who are real shit bags. Let’s stop this false narrative that people without kids are miserable or selfish or evil in some way. We are all just people, kids or no.
Some have them, many are not.
https://www.voronoiapp.com/demographics/Over-Half-of-Househo...
Compare this to even just 50 years ago. These options were limited to the highest classes of society. People tended to settle down and have children because that was the sensible next thing to do in life.