"To my surprise, it turned out that members of more fundamentalist faiths experienced greater hope, were more optimistic when faced with adversity, and were less likely to be depressed than their counterparts. Indeed, the people most susceptible to pessimism and depression were the Unitarians, especially those who were atheists. The presence of so many rules didn’t debilitate people; instead, it seemed to empower them. Many of their choices were taken away, and yet they experienced a sense of control over their lives. This study was an eye-opener: Restrictions do not necessarily diminish a sense of control, and freedom to think and do as you please does not necessarily increase it."
Dr. Sheena Iyengar, professor at Columbia University
It seem to sadden and enrage atheists to leave organised religion because it told them what to do, only to enter organised atheism and have A+ tell them what to do.