This trend among other things is one of the inspirations for writing this essay that was well received on here a few weeks ago. https://moultano.wordpress.com/2020/06/21/the-defaults-dont-...

I really feel like we don't have any effective model for how to integrate parenthood in our lives anymore, and so having kids has become almost an affectation or a hobby, rather than something that everyone bases their life around as a matter of course.