Because you are saying that reason alone can decide whether or not something exists or not.
If you want to get really philosophical about it, you can argue that humans cannot observe anything, since one method of observation requires validation of that method. For a realist who tends to apply logic to life, reason is a useful tool.
It's delightful to see such irrational comments from one who fanatically support 'hard line human reasoning'.
I do not fanatically support 'hard line human reasoning'. That would make me almost as bad as a creationist. I am willing to change with new ideas, unlike so many others.
Although the burden of proof is on you, allow me to simply say anything you say 'rationally' cannot prove or disprove the existence of an omnipotent God. In essence, you are trying to say something you cannot prove at all, but trying to pass it off as a proof.
Logic disproves the omnipotent God of the Christian Bible, if taken by the exact text.
1. God is benevolent and omnipotent.
2. God has the power to destroy malevolence.
3. Malevolence exists in the world.
4. Either God cannot destroy malevolence, or he wishes not to.
5. God is either a) not benevolent, or b) not omnipotent.
And what proof do I have? Plagues upon Egypt, enslavement and torture of a race of innocent people, and cities destroyed for violating moral codes, to name a few. Not to mention the killing of millions of innocent people, and sending billions of more innocent people to eternal damnation (if the Bible is to believed).
Just think, there are so many suffering people in the world today. Millions of people don't have sturdy homes, decent food, or safe water. Babies die from malnutrition and disease, yet they do nothing wrong. Why would a benevolent God bring souls into the world just so they can suffer for a few days or weeks, not knowing anything, not doing anything wrong, and then suddenly take them back to the afterlife? Why can't he banish the ills of the world that humans are not responsible for? Why does He cause so much pain and suffering in innocent people?
Rationally, I have proven that you cannot know.
Exactly my point, but I take it from a different view. It is
unlikely that an omnipotent God exists, and
possible for a lesser God(s) to exist. Perhaps there was a being that somehow set the universe into motion, but died when it was created. Perhaps God is a passive observer conducting an experiment, and the universe is his petri dish. We cannot know for sure.
possibility for a non-omnipotent God.
This is the dumbest thing I've ever heard. It is not a God if it isn't omnipotent. Otherwise, there are simple ways of being a God. God is synonymous of prominent, powerful, and prolific.
Then take "God" by a different definition. Would the Vikings not call Thor a god? Would the Egyptians not call Ra a god? Substitute the word "deity" if you wish.
Win by luck, lose by skill.