It’s just reality. In the last forty years the economy has restructured in such a way that most families need two incomes. Same thing is happening in the other developed economies. It would take a lot more than changes in attitudes to go back to the one breadwinner model.
Reality is a factor but to some degree we construct it.
My husband and I were seriously poor a lot. I’ve never owned a home. Etc.
But our convictions were such that although I brought in extra money with “at home “ work (which took its toll) we battled through and raised our own children.
Who have turned out fantastic and some of whom are currently raising THEIR kids well. All of my DILs are stay at home moms.
Priorities. Of course reality enters in. But usually when there is a will there is a way.
Fedzilla and many States have jacked up tax rates and invented new taxes is such a way that most families "need" two incomes ...
So why was it so possible to change it 40 years ago?
The magnitude of the change is the same.
Answer: a few subhuman slimebags have been working very hard to ensure that the change is all in the direction of decay.