While it's true that it was possible to support a family on a single unskilled laborer income in the '50s, their standard of living was far below anything most people would accept today.
I'm not even sure that is true. Poverty in the US was higher in the fifties and sixties.
https://en.wikipedia.org/wiki/Poverty_in_the_United_States#/...
I guess apartment living is closer to what people had post-war, but everybody wants to buy a house to get in the real estate gravy train.