A few things that are proven about humans:
1) We like to believe our theories are right. The thing that religion does is explain things that can't be explained by the will of god. However, since the medieval ages, the things that have to be explained with a higher existence manipulating them have shrunk; considerably. Also, religion does the exact opposite of proving their theory of god. Let's take a little psychological experiment into account. If a person is shown the numbers 22,24,26 and is asked what the next number is, he will say 28. If he is than asked what rule is applied and says +2 you can ask him to continue the chain. In the end people will try to find several rules like X*2 etc, however they will in most cases end up NOT trying to come up with a way simpler rule - the next number just has to be higher than the previous one, meaning 26,3 would be okay as would be 27 etc.
What is my point? Religion is basically telling us not to try to break the chain of +2, X*2, (X+2)/2 etc. and is trying to keep us in a train of thought that way, thus managing to have people stay on their path.
To be honest, I think that the bible is more like a tale of the brothers Grimm (for those who don't know them, look them up here:
http://en.wikipedia.org/wiki/Brothers_Grimm). The simple moral being: Don't do bad stuff, otherwise the big someone in heaven will punish you... One of the best ways to frighten children away from doing things is by scaring them enough and let's face it, an almighty identity sitting at a place they can't reach, looking down on them and punishing them if they do wrong is the best way to influence the consciousness of superstitious children through almost all time periods. The best thing about it is, that the church is making TONS of money with that book, so why try to convince people of the fact, that the things that are written in there are non - existant? There is close to NO better way to make money than to manipulate the faith of people into something.
For that note, I believe in the fact that someone or something made the big bang and the creation of matter in the universe possible, however I wouldn't call that religion, it is something I cannot prove, so I keep it to myself in most cases, unless asked.
And before anyone is going to tell me now, that it is the same thing with religion, there is a large difference. People in delirium writing things they see in hallucinations, modern scientifically knowledge about optical illusions (walking on water? please....), rumors / events blown out of proportion etc, the reasons and scientific explanations one can find for the stories in the bible / Koran / other similar books are aplenty.