The US consumer was massively expanding (mostly) his credit during the 50s-80s. This is the American "Golden Age". There's no further room to expand credit -- we tried it in mid 90s-00s and it didn't work out.
There was never a time anywhere in the history of the world where one working man could work a low-skilled laborer's job and comfortably provide for a family of four.
There was never a time anywhere in the history of the world where one working man could work a low-skilled laborer's job and comfortably provide for a family of four.