Testimonials at sites like ExChristian.net show that people leave religion for a number of reasons, many of which religious leaders have very little control over. Sometimes, for example, people take one too many science classes. Sometimes they find their faith shattered by the suffering in the world – either because of a devastating injury or loss in their own lives or because they experience the realities of another person’s pain in a new way. Sometimes a believer gets intrigued by archaeology or symbology or the study of religion itself. Sometimes a believer simply picks up a copy of the Bible or the Koran and discovers faith-shaking contradictions or immoralities there.
the reasons are generally the same given else where and enumerated on this blog from time to time.
it is also the impetus of our forthcoming book, From Fear to Faith: Essays in Crisis and Transition.
There are better ways to deconvert than to become an atheist.