RICHES do not necessarily make happiness, but a poll of 130 countries by Gallup found more people in wealthy places (America, Europe, Japan, Saudi Arabia) consider themselves happy, while those in poor countries (in Africa especially) generally do not. A map of the results, therefore, looks rather like an income plot of the world. There are a few exceptions. Mid-income Costa Ricans and Venezuelans are among the happiest on the planet. Georgians and Armenians, although not terribly poor, are among the glummest.