No, if you believe what you’re saying, you need to look around. The stats simply do NOT support your assertion. It does not take 2 people to make the same household income today that it did 40 years ago.
From 1970 to 2004, the median income per person, inflation-adjusted, went up from $28,100 to $30,513. So if you have both people in your household earning the median income, you would have $61,026 in 2004 as compared to having only $28,100 with one person working in 1970.
https://en.wikipedia.org/wiki/Personal_income_in_the_United_States#Over_time.2C_by_race_and_sex
And it appears from some other sites our inflation-adjusted per capita income may have gone up another 10% since 2004.
The “stats” are being distorted by success at the top. Families actually near median income are being squeezed out, mostly into poverty or near poverty.
Check out graph 1 under “3 reasons to be optimistic”:
That is a picture of the eventual destruction of this country, if not corrected.
Also check graph 1 under “As a Result, the U.S. Car Market Is Getting Older and Richer” (almost matches my quickie calc! Ie., to be “wise” to buy an average new car in 2015, you’d better be bringing in better than 90k a year.)