Paul Krugman, my dog:

So: I support tax increases that will reduce my own after-tax income; I worry greatly about unemployment, even though my own living is secure; I warn about growing inequality, even though I’m of the class that has gained from rising disparities; I’m upset about the direction this country is going, even though my own life is comfortable. And this is supposed to cast doubt on my motives?

This is what I jokingly refer to as being a "class traitor." But it's not all patriotism or Noblesse Oblige, it's also the proverbial enlightened self interest. To wit, none of my prosperity is possible in a world without a vibrant, literate, educated middle class. As a creative/enrepreneur, I have no desire to end up as a toady to some 21st Century DiMedici. However, without a rich economic infrastructure to draw, on, it's that or back to the land for me.

Also, as people much more well off than I have pointed out, being Brazil kinda sucks for them. Helicoptering everywhere sounds like fun, until you remember you're doing it to avoid being kidnapped for ransom. That's no way to live even for a rich person.