Most personally convincing reasons you don't believe.

[Drich]

I've said this 3 times now so pay attention:
Again in some cases the religion May indeed be older, BUT THERE ARE NO SURVIVING DOCUMENTS OF THOSE RELIGION OLDER THAN THE BIBLE!!!!

Do you not understand what that means? For instance in the Case of Zoro-ism Their oldest complete manuscript dates all the way back to the 17th century. Their oldest incomplete document (a few pages of their book) is from the 10th century AD.
http://www.heritageinstitute.com/zoroast...cripts.htm

Do you not see what you are claiming of Christianity is most likely true of the religions you said Christianity 'borrows from?'

It doesn't really matter if the writing were newer than the bible or not, though there are things like the cod of Hammurabi. The fact is that older religions existed that had gods that supposedly created the universe, and people who could work miracles.

If you understand your argument correctly It COMPLETELY MATTERS Which One Came First! Your Whole Argument Is Contingent On The Idea That Because These Other Religions Came First The Jews And Christians Borrowed From Them!!! Now if all that you know of these other religions are based on these 'holy books' (what else can they be based on as they have been considered 'dead religions for hundreds if not thousands of years) then your argument can be used against you. Because again IF their 'holy book' is a lot newer than the bible, (for instance 17th century) then it is just as plausible that those stories were borrowed from the bible if in fact they are similar.

And even if there wasn't that, there are other reasons to not believe your god exists. It is becoming clear to me that our thought processes are very different from each other, and we're very unlikely to come to a mutual consensus here.

Agreed, if your thoughts are not grounded in logic and reason then it stands to reason we will not come to the same conclusion.