Edit: I think I originally read your statement wrong. You're saying, just don't be a dick -- you don't need religion to help you not be a dick. Understood. I don't really think religion is about good behavior. To me it's more about fashioning an understanding of your own existence. The fact that it's an opiate for the masses means that it has indeed had protective and restorative powers, and destructive powers, and ones involvement is such can help one understand one's relationship to others, to the earth, and to existence itself.
Original response:
I'll admit to not following every post on this thread, but explain to me how someone who goes to church every Sunday, who is involved with chartiable work with said church, believe is a strict separation of church and state, doesn't prosletyze, and who votes completely the opposite of the religious right, is "being a dick". The person goes to church for the discipline, the meditative aspects, and because of his own search for meaning in this world.
And for the frankly self-serving motive of general health:
For example, researchers at the Mayo Clinic concluded, “Most studies have shown that religious involvement and spirituality are associated with better health outcomes, including greater longevity, coping skills, and health-related quality of life (even during terminal illness) and less anxiety, depression, and suicide.