I am 70. I had one daughter when I was 28 and I was happy with her. She is married and have her own children so I'm also a great-father.
The interesting thing is I remarried at 52 with a much younger wife who accidentally gave birth to our son who is now 14. This is the best thing that can happen to a retired man, life would have been so boring without taking care of the education of my son. My situation makes it easy to devote time to him. He is kind of a spoiled child and he likes that
