What dedpoet said, only the doctrinal research I did before leaving was of a different nature: it was all about morals and ethics. In fact, it was about ethics in other religions. The question that finally shook me loose was: "What keeps unbelievers honest?" fortunately, I stumbled across one useful book: Peace and Justice in the Scriptures of the World's Religions, by John and Denise Carmody.
My fear of being destroyed at Armageddon faded with time. For a long while, though, I was certain that we would destroy ourselves without gods or Satan's help. I'm no longer certain of that. We might just make it after all.
I was a fader, long before I knew there was a name for the process. In fact, long before I made up my mind to leave, I was fading. It was a depressing process, because I didn't realize I was on my way out; all I knew was that it was the longest "spiritual slump" I had ever had, and it looked like I would never recover. Fortunately, I didn't actually care, so at least I wasn't worried about it.