There's a short and interesting in the Times (if not terribly insightful) article questioning the Ethical Worth of Happiness.
Sad people are nice. Angry people are nasty. And, oddly enough, happy people tend to be nasty, too. Such (allowing for a little journalistic caricature) were the findings reported in last month's issue of Psychological Science. Researchers found that angry people are more likely to make negative evaluations when judging members of other social groups. That, perhaps, will not come as a great surprise. But the same seems to be true of happy people, the researchers noted. The happier your mood, the more liable you are to make bigoted judgments -- like deciding that someone is guilty of a crime simply because he's a member of a minority group. Why? Nobody's sure. One interesting hypothesis, though, is that happy people have an ''everything is fine'' attitude that reduces the motivation for analytical thought. So they fall back on stereotypes -- including malicious ones.
The news that a little evil lurks inside happiness is disquieting. After all, we live in a nation whose founding document holds the pursuit of happiness to be a God-given right. True to that principle, the United States consistently ranks near the top in international surveys of happiness."