Shouldn't everyone be agnostic until the being responsible for creating everything makes itself finally known?

I just had a friend who told me that after reading lots of other books, he found his answers in the Bible. I told him fine, whatever works for him is good. He took that as me concluding that the only reason he believes in God is because he has serious physical disabilities that make him miserable and needs to be comforted.

What he really meant was I should believe in God no matter what. He knows I’m agnostic. The thing is, should there be anymore debates about the existence of God? Shouldn’t we just all wait and see?