If god is in a man's psyche, how can he be free of bias?

Man sees god through his own psyche. God is not in his psyche. Each man's god is sacred to himself.
I suspect you do not comprehend my view of god.
You said god is in a man's psyche, perhaps it could have been phrased better.
I don't just not comprehend your view of god, I don't comprehend anybody's view of god, or rather his existence. In fact, scrap that. I do comprehend your view of god, I'm not stupid. I just don't agree with it.
Even if each man's god is sacred to himself, there will be bias in that. It's the whole 'my imaginary friend is better than your imaginary friend' deal.
So do you believe in the existence of god?