Member Rara Avis
Grinch, all you're really doing is substituting one faith for another and, indeed, in doing so, have introduced us to the one belief shared by all sane people. No, not a belief in gravity, though I might point out it, like God, seems to defy any clear understanding. I'm talking, rather, about your faith in cause and effect. Generally, when we find people who have lost their faith in cause and effect, we throw them in an institution.
Your analogy, I think, is flawed because your comparisons are flawed. If you want to use falling and gravity, then you should use creation and God as counterpoints. Just as falling will remain an effect even should you discover it has a different cause, creation, too, would withstand any denial of God.
If you want to, instead, talk about Christianity being the one true faith, then I think you need to compare it to your own faith, i.e., compare it to your conviction that cause and effect mandate you will continue to fall to Earth even in the face of new discoveries. You contend that religion is an effect and must have a cause, but offer no real proof of that. Is cause and effect an effect, too? What, then, is the cause of cause and effect? Your faith in the way the Universe is (not an effect, simply a reflection of reality) isn't all that different than a Christian's faith in the way God is. And, like the Christian, you can't simply substitute a new faith should the old one fail and continue to function in the same way you have all your life.
By the way, Grinch, I didn't interpret the question exactly as you did, but that's probably because I don't think of religion the same way you appear to think of it. Religion isn't necessarily just about God. I think we are subject to many religions, from the scientific method you mentioned in your own post, to democracy, to human rights, to a belief in the sanctity of human life. Religion isn't a four-letter word.