Another similarly flawed measure is household income (https://en.wikipedia.org/wiki/Household_income_in_the_United...), which is used frequently as a measure of socio-economic class. Under this measure, a single adult making $90k and a household of two adults and two children making $90k combined are treated equally, which has always struck me as quite stupid.
If both parents work they're also easily spending roughly 30+ grand a year on daycare alone. The DCFSA can help, but its tapped out at 7500 atm, which is cute, but unrealistic. A real daycare following all the best standards is not cheap, its like a second mortgage. I can see a major difference in my daughter coming back from daycare, I mean she knows things I don't think I knew when I was her age...