When you say "we would admit..." who is "we"?
A source outside of human existence that has authority over human existence would make that authority by definition not connected to the very thing they have authority over.  Reminds me of new age believers who claim there are things beyond what we can experience because they are not of this physical nature. And then they claim that they affect people. How could they be beyond and yet impact this existence?
The thing is, whatever analogy or metaphor we use to express God would seem to be minimize God's power. I have liked this definition: "God is that which we cannot conceive". 
I'm an Agnostic myself. Atheists think we're just weak atheists, and some Christians think we're ripe to be converted. 
I wish all religious were able to get along. And certainly, non-believers have their own faults. I am glad people find meaning in religion. And I know religious people think non-believers are very lonely.  And rightly so.