That's a very small idea, quite unworthy of God Himself. God (capital-G, in the Christian sense) is not a projection of the human mind, but an independent, self-existent entity Who stands
far above both human intellect and imagination. He is consistent in His nature, and though human experience of Him varies, He is not
actually a different "god" with one person than with any other. The confusion arises from people wrongly attributing to God what are merely a physical phenomena or, worse, encounters with an enemy of God who seeks to distort our understanding of Him. Resulting from such are all non-Christian religion, heresy, and atheism, both intellectual and practical.
By using "better", you are applying an argument of objective value (i.e.: morality), which in turn requires an objective
standard of good and bad, which itself requires an objective "
giver" of such standards.
Consider this too:
Do you, yourself, as an individual person, claim to know the experiences, relationships, and knowledge of
all other people such that you can declare categorically, "Saying, 'I don't know' is much better than believing in something that has no evidence other than ink on paper"?
Just because "evidence beyond ink" is not within
your grasp does not logically lead to the conclusion that such evidence does not exist.
To put it another way (and with a sharper point), you are free to believe what you are comfortable believing, but don't pretend that you know enough to
impose your
disbelief on others.