I grew up with 6 family members in a 3/2 house that was 1250sqft. Houses today start at 2000+ square feet in the USA. We DON'T need that. On top of that, there is very limited stock of homes for people who no longer have kids.
Every type of manufacturing in the US has gone toward lower throughput, higher price. Luxury apartments, 2500 square foot houses with no yard, $50k for a car. And it is because we are all comparing ourselves to each other and wanting to appear like we can afford this lifestyle, and its finally breaking. But it was allowed to go this way, because it was working. Pricing out the bottom 25% didn't negatively affect the profitability of the companies making these items, in fact, it made them more profit.