FriedRiceNSpice
Captain
Finally - the American Community Survey asks about income, home ownership, education, and household structure. From here, we know that the median household that owns a 3 bedroom home with 2 cars and has children in college has household income of 125K. For a 2 income household, that simply requires each household income earner to be making ~60K. Hardly unreasonable or unattainable.
Wow, the median US household can enjoy the same quality of life as in other developed nations in the world. Rather than arguing about the criteria for "mass affluence and material abundance," and "total financial security," I will just end the discussion by saying I would expect the median household in most developed nations to enjoy "mass affluence and material abundance," by your definition.