Actually I do live in a nice (modest) house and drive a nice (modest) car. There are some things about both that I would change, but even if I had all the money in the world, I'd never buy a gas guzzling SUV or a McMansion.
I've been accused of living in a "McMansion." Uh yeah, I don't even have 3000 s/f under air.

We bought "smart"--the smallest house in the neighborhood of large homes. We've been bashed for driving a Prius.

I guess it's too "yuppy"? I've been bashed for driving an "expensive sports car." Um, I drive a 26 mpg, $30K SKY. I'm looking at an SUV--a 34 mpg Saturn Vue Green Line. I'm sure someone will find something to bash me for on that one.
And anyway, the people who do have those things aren't necessarily "upper class." Lots of people own things they can't really afford.
And I've also been told I'm living beyond my means--a few days ago someone PM'ed me and told me that in so many words I was "white trash who took some crazy interest only, zero down, stated income mortgage, and people like me are causing all the problems in the mortgage industry today."

Um right, I put 20% down (it began as an 80/3/18 and that 3% second is long ago PIF), full doc, 30 year fixed FNMA loan. Doesn't get more vanilla than that.
We pay our bills, save our money, and live within our means. For the past couple of years and moving forward next year we've been taking low-dough vacations to save for our dream vacation to Hawaii. This year we spent our vacation at Vero Beach on our
DVC points--total bill was $210, and that included meals outside of the unit. We'll do the same thing next year, plus swap houses with friends who live in Key West for a long weekend--they want to take their kids to WDW, we want to stay in Key West, how great is that?!
But I guess because we work our butts off--we both work f/t and have a p/t source of income as well which puts us into the upper middle income ballpark, we are to be looked down on.

Frankly after making sacrifices to get educations, working two jobs now, even though we save all the money we make at the second jobs towards retirement, I guess that makes us bad people. I think it makes us responsible people who are planning for thier future.
I have all the sympathy in the world for the people who truly seem to get knocked down everytime they turn around. I have no sympathy for people making $50K a year with $40K in credit card debt who will use the last $10K of available credit to finance a week long deluxe trip to WDW--even though thier kid needs braces and they are getting laid off in four months--then they whine about it when they can't pay their bills.
Anne