And one very good reason not to conflate income and class is cost of living. A family making 130k in any major metro area is far from upper class. It's upper c

And one very good reason not to conflate income and class is cost of living. A family making 130k in any major metro area is far from upper class. It's upper class in small towns. I'd venture most people making 130k+ are not in any way upper class. And a family making 40k isn't lower class in a lot of the country.