Remember that documentary from about 5+ years ago about spoilt rich teenagers? I think it was called Born Rich. Anyway one of the things that one boy said really stuck with me (not sure what his name was but he was generally unhappy, and I think he later sued the publishers):

'People think because I'm rich I must be happy. But they don't realize that my happiness is connected to so many material things, if just one of them goes wrong it can ruin my day.'

Or something to that effect. More material comforts = more dependency for happiness = greater likelyhood of misery (or at least, 'peevement' or angst). He was talking about all the expensive toys that had to be maintained properly, special meals he liked to have, elaborate plans for essentially simple social occassions, and so on.