The way we speak of parents today is quite different than it was 100 years ago. In times past, it was almost inevitable for individuals to grow up and become parents. You may grow up to do many different things, but becoming a parent was what everyone did. It actually was the way of humanity for thousands of years.
It’s quite different today though. Rarely, if ever, do we hear any young person talk about growing up and becoming a parent. They talk far more about what career or hobby they are interested in. Ask a young person what they want to be when they grow up and you won’t hear the response, “A parent”. Ask them if they want to be a parent, and the responses vary from a non-committal “Sure”, to “No way!”
A quick glance at marriage rates, family size, and average marrying age tell the same story. The marriage rate today is close to 30%. In 1920, it was over 92%. The average family size has more than halved over the last century and marriage ages for both men and women have increased by almost 10 years each.