>we went from households with one breadwinner to two. What did it bring us? You are assuming the US had a choice in whether its population has to start working

>we went from households with one breadwinner to two. What did it bring us? You are assuming the US had a choice in whether its population has to start working in the latter part of XX century. Single breadwinner thing, along with cheap quality housing for everyone, highway build up and other projects of massive scale of that era were mainly possible because every other relevant player in world economy was still rebuilding from losing most of its population and/or infrastructure, transitioning through a huge political shift, or Argentina. It was never sustainable in the long run. Once those resources ran out economy had to transition back to what is natural for it - everyone contributing.