Relavent
https://www.npr.org/templates/story/story.php?storyId=552528...
> The average American house size has more than doubled since the 1950s; it now stands at 2,349 square feet.
> Back in the 1950s and '60s, people thought it was normal for a family to have one bathroom, or for two or three growing boys to share a bedroom. Well-off people summered in tiny beach cottages on Cape Cod or off the coast of California
But families always have more need of space than the childless. This makes anyone contemplating children very sensitive to questions like "how much of my present after-rent income must I give up for another 100 sq ft?". And this will be very different for the guy who's found himself spending 75% (to be near google, or whatever) and the guy spending 20% (in 1958).