My opponent is clearly not religious and therefore knows next to nothing about a topic that he thinks he can win. I would like him to clarify what this argument is about. Free will? Religion not being true? If you are saying religion is not true then that is correct, but only to you because you have free will, therefore this is an unwinnable debate solely because it is a matter of beliefs. But if I am wrong about what this debate is about then please tell me and please clarify what it is to me.
I understand that you can believe what you want for any reason you want, any of us can. I can believe that you are a hermit living under a bridge because I went swimming on Tuesday. But you still haven't clarified what you are arguing.