My parents were 20 and 23 respectively when they had my sister and then me. Back then people generally were younger mothers, having first babies in your 30’s and even late twenties was almost unheard of,
The plus side of that was that parents and children were not too many years apart, so parents were able to play a far more active part in the lives of their grandchildren, and to a large extent get much of their life back by the time they reached their 40’s.
On the downside 19 is incredibly young to have a baby, especially to plan one, when most of the people around you are not. It’s likely that your own age group will no longer have anything in common with you, and older people will assume that your pregnancy was either unplanned or that you were incredibly stupid to plan a baby this soon in life.
Having said that, I believe that parents choosing to have babies later and later in life means that we run the risk that the next generation of children will be grandparentless, and it is sad that many of those relationships will just never happen to a huge degree.
I would say that anyone should be solvent and not reliant on the state if they’re planning to have a baby. And I say that of someone who is 20 or 45.