I do jump to conclusions about people, I think we all do, but once I know them I'm not bothered either way. We've got good friends who are what some would call middle class and another who runs an animal sanctuary and dresses like a bag lady! My next door neighbour is a builder and is very well off but one of the kindest, most down to earth guys you could ever meet, I love him to bits. I know people who are poor who are lovely, and I know some who are tossers!
Money has nothing to do with it and you find tossers and nice people at every part of the financial spectrum. You even find nice people driving BMW cars. Occasionally ;0)