His title is Pope for you. It is bestowed upon him by a group, and they choose to refer to him as such. I, and many others, do not choose to do this. If it is any help to you, I shall always refer to Bela Pelosi as Pelosi (D; CA).
The title of President is bestowed by a "group" as well. Out of respect, even those that didnt vote for him, refer to him (or should) as "President" Bush.
But we can certainly agree to disagree. :o)
MM