As with any question like this, you have to ask, are religious people happier or do happier people choose religion? A person who is unhappy might be so because

As with any question like this, you have to ask, are religious people happier or do happier people choose religion? A person who is unhappy might be so because they are questioning why things are the way they are. They are not happy to believe, so to speak. You can't make them happy by making them religious. I've lived most of my life in countries that are much more secular than the US (and briefly in the US). In majority secular places I think I observe a reversal, although I don't know about teens, just in general. It's like being outside the social norm is the issue.