I have a thing with viewing rich people as snobs. I'm guilty of seeing rich men as corrupt, rich women as divas, and rich kids/teens (more so the latter IRL than the former) as spoiled brats. Still, sometimes real rich people play into it, like Kim Kardashian (who is so shallow, selfish, and trashy, she makes Paris Hilton look like a lady). The worst are those who think they are above the law, like Leona Helmsley did years ago when she refused to pay taxes.
I did know a rich guy about my age, though. He was from NYC, and he was new money. I don't know what his parents were - I think they were in business or something. He was actually one of the least pretentious people I knew - quite down-to-earth. This guy admitted to me that his family sometimes acted a little full of themselves (his younger brother most of all), but they were decent people. But I guess the damage had been done by TV.
I kinda have a loathing for WASPs and other blue bloods. It's because a lot of them live in their own little gated communities and act like the rest of the world is dangerous. So I guess if some WASP trophy wife would stay where her maid lived, she wouldn't last a day because she needs her Chanel products, her network of ditzy friends, and her glass of top-name chardonnay (don't worry, this is a hypothetical example) - to say nothing of how she would fare if she had to live somewhere like Ethiopia. I always cast them as bad guys in my writings.
In most of my stories, the portrayal of rich people varies wildly. I include rich people who are nice and rich people who are stuck-up snobs.