Why Religion Makes Only Some of Us Happy

"Religious people tend to feel better about themselves and their lives, but a new study finds that this benefit may only hold in places where everyone else is religious, too.
According to the new study of almost 200,000 people in 11 European countries, people who are religious have higher self-esteem and better psychological adjustment than the non-religious only in countries where belief in religion is common. In more secular societies, the religious and the non-religious are equally well-off.

[...]

For example, a believer gets a happiness boost in Turkey, where religion is part of the fabric of daily life and taking part means you're doing the "right" thing in your culture. But that same person wouldn't see any benefit in Sweden, where few people care much about religion.

[...]

Nonetheless, the findings suggest that research on religion and happiness in the United States — where religion is relatively important compared with many other nations — may not apply across all cultures."

Livescience.com, 25 January 2012

In other words, it's good for you to be in the in group.

Irreligious countries are happier

"Circumstances predict religiousness," he said. "Difficult circumstances lead more strongly to people being religious. And in religious societies and in difficult circumstances, religious people are happier than nonreligious people. But in nonreligious societies or more benign societies where many people's needs are met, religious people aren't happier -- everyone's happier."


ScienceDaily Aug. 8, 2011

This should settle the discussion on religiousness and happiness. Irreligious people has a harder time in religious countries, but if irreligious people are the majority, then everyone's better off. The map in this post (which I think is from the Gallup poll this study is based on) is also pretty self-explanatory.