Another interesting topic LT.
From the posts already, uh, posted, I can see that we all pretty much agree on the terms and definitions being laid out. Belief, and also faith, play a part in our human existence, and most likely of our development not only in our civilizations but also our species. Maybe it's part of our ability to make assumed decisions, be it choosing the correct direction to locate water or whether to trust a neighboring village.
Your comments about prayer though may need to be thrashed out a bit. I would offer the suggestion that the feeling of comfort from conversing your worries to God is more in line with comforting the inner child's worry. Asking one's heavenly Father to recognise and sooth ones bruised knee, and stop the tears.
There is no doubt from me that this works for a large percentage of believers. But, then, so do placebo anesthetics. The body and mind are incredible things. Which makes sense considering what they went through to get us us here.
I spent some time in Thailand with a swami. He explained that the closest a human can get to bliss is in the deepest of sleep. At this point we are the closest to God. SO, it's interesting that you mention sleep.
I'm not sure if I agree with you regarding our atrophying of the search of the 'inner' world. If you are talking about people in general then I would say that that search is at the highest it's ever been. From yoga to chiropractic, Kabbalah to vegan, meditation to art, people are investigating rather than quoting the 'religion' on their birth certificate. - Then again, I may have misunderstood you comment.
steve