I sure hope some of you have been to TED before.
Religion seems to be a source of comfort for most theists, but for a minority, it's a source of euphoria. These people creep me out. On some level, I'm a touch jealous that they've found a sense of purpose and a meaning for their lives. However, I'm well aware that such people are submitting to a belief system in order to achieve this. They're willing to stop searching for answers in the name of happiness.
Me? I may not feel as secure, but I think the fact that I'm still searching means I get to understand new things. My intelligence actually increases over time. This can only be a good thing for society as a whole, not to mention providing me some satisfaction.
Anyhoo, the above video is one of my favorite TED talks, and it's all about synthesizing happiness. Yep, you can make yourself happy - but not how you'd expect to.
Fundamentalists are happy because they've decided to stop thinking.
I'm happy because I understand happiness.