Quote from DagoodS’ blog entry today; it echos my own case. Emphasis on the last sentence is mine.
In retrospect, I now realize my God-belief was NOT at the core of my being. It was NOT the very center. What was more important to me was the answer to the question: What actually is? If it was the Christian God; good. If it was some other God: not-so-good, but doable. If it was no God; bad, but if that is what actually is then there is no use crying about it. As key as God-belief was, there was something even deeper—something that could trump that God-belief to the point of no longer believing in a God—the desire for what is actual reality.