>>723364441
Wives in 1970 didn't have to work
Chart (if it's even real, I'm pretty sure it's not) doesn't take into account single vs. dual income at all
You could buy a house in 1970 on literal $1.60 minimum wage, just your income, and afford a wife and kids.
China has 90% home ownership
Decent housing China costs $25 to $150 a month, or even free
Pic related, China gave people in inner Mongolia these houses for free, $0, look it up