Ok. I read the entire thread. It was interesting, and I decided I'd like to give my own two cents as to the original evidence presented in the OP, even though it might have been done to death by this point.
1. The idea of God works for most people most of the time. Ideas that work for us on a regular basis tend to be taken as accurate.
Hm. Note how you worded that: "tend to be taken as accurate". So, ideas that work for us are taken as accurate, but this does not say anything about whether they actually
are accurate or not.
Also, of course people believe that the things they believe in are true. Otherwise, why believe them? Again, this says nothing as to the validity of the belief.
Also, there is a thing to be said about self-fullfilling prophecies. This happens with psychics all the time: a "prophecy" made by the psychic ends up being shoe-horned into whatever happens in that person's life, thereby coming "true."
You used the example of a person becoming a better person through his belief in God, ie, he believes God exists, and that God believes certain things are sinful, therefore man prays to God and works on removing those sinful things from his life, thereby becoming a better person.
The problem with this example is that God does not have to exist for the same result to occur. Merely believing that God exists is sufficient.
2. The ordered nature of existence forces us to consider the reality of a "God". Existence is not random. How do we explain this? What is responsible for the order? And why? The answers to these questions are a mystery, and we have named this mystery "God".
I would rephrase the opening sentence as "it forces us to consider the
possibility of God", although force might also be too strong.
The order of the universe isn't surprising to me. It makes sense that if there are basic laws underpinning the movement and joining of atoms and molecules, that order would inevitably result.
As for your last sentence, I thought "God" was supposed to do away with the mystery: God answers all those existential "whys". That is why belief in God is so appealing-- nothing need be a mystery when you believe that God just did it all.
3. Energy can express itself as consciousness (take ourselves as an example), again, forcing us to consider that a consciousness could in turn express itself as energy (in much the same way as matter and energy are interchangeable). If so, all of existence could well be the "mind of God, expressed", just as the ancients claimed.
This one doesn't seem to be evidence insomuch as a hypothesis.
