I wonder if most of these people have kids or not, or plan on it.
When I was a young man, I served as counselor to a wise district president in the Church. He tried to teach me. One of the things I remember wondering about was this advice he gave: "When you meet someone, treat them as if they were in serious trouble, and you will be right more than half the time."
I thought then that he was pessimistic. Now, more than 40 years later, I can see how well he understood the world and life.
Humans need connection. Some more than others. Imagine how tightly-knit human societies had to be for the bulk of human history. Whether this is the right answer, I have no idea, but it seems like people are grasping for something like connection.