For you to say that you exist and he doesn't, you're only pointing out that you don't believe he put you here. Even though you don't have a clue to how you got here, I should believe your words over his right?

Where is the logic in choosing unbelieving over believing?

If what I preach is right, then you are screwed. If what you say is right, then I'm with you. Why should I take your side? At worst, I'm with you. What is the logic in choosing something with no upside?