Have you not considered that you are equally certain that most of us are wrong about our religions, as you have made quite clear on several occasions? I bet you're also pretty sure that creationism is not how the world came about, and that matter is made up of atoms. Yet in neither case have you had an opportunity to experience those realities first-hand, and you must rely on the research, experience, and conclusions of others to form a decision on them.

EDIT: Apologies for engaging you in debate, but you started it. :P