I get this sort of thing a lot, actually. I will preface this by saying to you Shark, that although, we may not agree on this topic, you seem like a good dude, and I am sure you are a great dad, so I don't want this to be in anyway seem directed towards you, but since you asked....parents will often ask me if I have children, but the cold, hard truth is, what does having children have to do with this? How many deadbeat dads are there out there? I have a son arriving in March, so does that mean when he arrives I have all the answers? Or I am more qualified in April than I am now? Some guy in prison that has an adult son knows more about parenting than I do? It's a "get."
I have taught child development, parenting, counseling families, etc., for which I went to school for many, many years, but having a child? Requires ZERO education, training or licenses. I could write books of the ignorant families I have dealt with over the years. So, no offense, but just because one has an adult child, does not mean, they necessarily have a clue. They certainly might; but it's not a guarantee by any means.