Kids are a blast, in your golden years you will wish you had some.
Not when you get the $200,000 plus bill for college tuition..........then you will be asking WTF did I sign up for??????? Right now, one of my friend's marriages is coming to an end due to incessant fights with his wife over who will pay the cost of college and grad school: kid via loans, or parents. One thing is for sure, the bill will be there at the end, and it will be huge.
People generally make decisions to have children for reasons that are emotional and selfish and not for reasons that are based on financial common sense, the actual anticipated welfare of the child, or any other logic-based reasoning and thought process.
The question asked by the thread starter about having children as one gets older is a legitimate one. I have seen some guys my own age have children and it's a joke. They can't play catch with their son because of an arthritic shoulder. So the kid is denied a chance to catch a baseball with his father, something every kid should be able to do, because his Dad's body is breaking down. Is that the upbringing any kid deserves?
There are some exceptions. One of my cousins had his only child at age 34, this the result of banging some girl he dated for only a few months and never married. I am pretty certain that he had no real interest in her other than to serve as Mama of his baby. He definitely wanted a kid more than he wanted a wife. He is now in his late 40s, still single and he is doing a very good job as a single father of that kid. He has joint custody with the mother, but it seems like the kid, who is also my cousin, spends more time with father than mother. He is a good kid.