Money = Happiness:

"University of Southern California economist Richard Easterlin surveyed 1,500 people over nearly three decades to see what puts a kick in their step and a smile on their faces. His results, published in September in the online edition of Proceedings for the National Academy of Sciences, reveal that time with family and good health are the stuff of happiness.
Wealth, on the other hand, doesn't necessarily lead to joy and contentment. One reason: People with more money usually want more things. More McStuff."