In the big picture wealth may be unfairly distributed.

For me personally, the need for money pushed me to work, and work helped me develop my skills and character, overcoming weaknesses, contributing and helping others (If I don't need to work I would be...not a very decent person and of little use to the world). In this way, the money I receive is a direct measure of how much better I become (not rich by the way). So needing money turns out to be a good thing for me personally.