How very very true that is. I have friends that make less than half what I do. Once upon a time, I would have thought that my current income would mean I'd "made it". But somehow, here I am, still occasionally concerned about being overdrawn, still trying to be frugal, still feeling like I don't make enough to do all the things I want to do. By world standards, I was fantastically wealthy when I was peddling vacuums.
Some things are more a function of the human condition than anything else. People in San Diego complain about the weather.