What you really mean to say is that you have faith in a god that doesn't exist : )
You have faith that you have a brain. Misplaced, imho, but faith you do have.
Faith in my brain? Actually I think emotion trumps reason most of the time. Take your responses for example.
When did you see your brain last, if not in the bottom of your storied coffee cup? You're the one searching for God there.
You are right, I shouldn't have been looking for your God in the bottom of a coffee cup. I should have waited until I went to the loo.
I'll leave you to your detailed study of evo scat. Perhaps it'll lead you somewhere. But, not to God. To your hitherto unseen brain, perhaps.