Eddy- You believe in god. Therefore you believe god exists. God only exists because you believe in the existence of the divine the spiritual, the afterlife--- Faith underpins your belief in every aspect of your life.

You can have no proof of the existence of god however, just your blinding certainty of his/her/its existence, which is fine as far as it goes. The problems occur when you, or others like you, expect the rest of us to live in obedience to your specific religious rules. We find that annoying!