Does Money Buy Happiness?

According to researchers (footnote, E.g., Martin Seligman, Daniel Kahneman, Ed Deiner), money buys happiness only to a very limited extent. Not having money- that is, a family income of less than 30,000- is related to less happiness, but once your basic needs are being met, the increase in happiness from say, $31,000 to $131,000 is really not that great! Hard to believe, isn