It seems to me, that many people go through similar changes in outlook during the course of their lifetimes. It's a part of growing up, of reaching a point where you are most comfortable, of carving out your own little niche so to speak. Everyone is affected by events the events of life in different ways, and it affects outlook as well.
I've gone through several such stages, and I am perfectly content where I am now (when it comes to my religious beliefs, anyway). I've tried many religions, and I've never felt what I do now with any other. I've been wiccan, but something just wasn't right there...I was just going through the motions. I was Christian once as well, and though I believed with what seemed to me to be all of my heart, I felt no love in return. I was atheist, however something seemed to be missing...I felt as if I were reaching for something and not finding it...it was empty. I finally became pagan...first with the Celtic pantheon and then the Roman as well...and I feel the love that I have a feeling I was supposed to feel with all of those other religions...the emptiness is gone now