This evening I saw a young family on a train. It was getting late. People were tired.
The young family comprised a father, mother and two young daughters about 2 and 3 years of age. The daughters clung to their parents in turn. Asleep, awake, asleep, awake. They were happy. They were safe.
The children had unconditional love for the parents had unconditional love for the children.
Life creates life.
Being childless can be profoundly sad.