The author is describing a general trend of domicile in American life, which is statistically[0] accurate. Most people who are in a stage of life where they can afford a detached home or mindset to buy one also have or are starting a family. I'm sure there's data to back up my claim somewhere.

[0]: http://www.nmhc.org/Content.aspx?id=4708, see the table "State Distribution of Apartment Residents, 2015", which shows that most US residents live in non-apartment homes.

Your comment implies that you have started a family, and want to state that you don't regret it. That's great. What does that have to do with where you live, which is what the article is about?

Not OP, but:

"But when we marry and start a family, we are pushed, by custom, policy, and expectation, to move into our own houses. And when we have kids, we find ourselves tied to those houses."