We can all try to apply human logic and draw a conclusion on that, but they are all but assumptions at best, waiting to be overthrown by future assumptions. That is how it went and so it will always be.

There is no way of telling you are right in assuming Christianity is the one and only true religion. On that note I personally can’t see any reason to discard any other religion until proven wrong.
There is to much proof of people capable of believing anything in the right circumstance. Why put your eggs in one basket 😜