Mr. Mike, I'm very much in agreement with you on most all of what you say. I don't think class warfare is helpful, though we've both got to admit that our government, laws, and economy in the US rely on competing factions, and if people don't fight for themselves, they're liable to get snookered. There have been steps taken over the course of our American experiment to reduce the most egregious forms of competition and allow for cooperative endeavors (socialist projects, like mass transit, and a progressive tax for the former; a culture that rewards common cause and public service, not to mention tax benefits for charity giving, for the latter).
I also agree that being "rich" is demonized somewhat. I think it's very slight, though, as people are still trying very hard to be rich.
However, I don't think rich is a relative term. I think there are reasonable metrics and standards for determining class. Otherwise, how would we know that half of China is desperately poor? If you're interested, one definition of middle class I liked was that a person could lose their working income and still live comfortably for at least a year. A related definition for the wealthy would be a person who could stop receiving working income and live comfortably indefinitely. There's obviously a lot of problems with these definitions, but I like their tangible and simple measures, at least for conversation's sake.
I also differ greatly about the pros and cons of redistributivism, but we don't need to hash that out here.
Similarly, I don't believe your personal experience can be easily extrapolated across our society. I'm very glad that the US values and celebrates social mobility, but sometimes the barriers just pile up. I usually think of it in terms of probability. How probable was it for you to surpass the educational level of your father? That probability, across a society, will have some people in your position (i.e. success) and other people who aren't. A person with similar personal characteristics to your own might not have made it to where you are based on factors outside of their own control. I don't want to morally impugn them because they didn't succeed.
But, anyway, as I'm sure you saw another poster say, this class issue is an issue of the Dems' politicking (I'm mostly blaming Clinton). Hopefully, our combined effort will be enough to subdue any overindulgences in class warfare.