I am curious, how exactly would you prove that God exists, or does not exist?
From what I have seen, people who believe in God usually do so as a matter of faith. Although they can site examples of creative design, miracles, and other suppossedly "God" inspired things, it always boils down to faith. As well it should, since it is a matter of spirituallity rather than science. In Christianity, faith in Jesus/God is the point. So it becomes more of an issue of whether you believe the idea, rather than ability to prove the existence.
For people who claim athieism, the question is equally if not more confusing. Since God is a considered a spiritual being by most people, there is no scientific evidence that can be applied. If there is no scientific evidence, then you must rely on YOUR ability to accept a God or not. Which quickly spirals into ridiculousness. How does not liking the way the world works and thinking life is unfair or unjust, prove that there is no God? Just because things don't happen the way you think they should, doesn't mean there is no God.
Maybe it would be a better world for everyone if the religious relied on faith to influence the non-religious, rather than invading privacy, attacking, and insisting everyone except them was going to hell. Maybe it would be a better world if the atheist's and others like them stopped antagonizing, insulting, and attacking the beliefs of the religious.