The same kind of blatantness you're exposing your opinion by though! It's actually stupid to consider the afterlife theory of your religion as truth in the sense that word was actually meant; truthful, actual, factual, tangible, potentially reproducible and so on.
It's plain arrogant to think there is no third choice or fourth choice, just like it's actually pretty damn arrogant to think of your view as superior somehow... just because you're a convinced religious person.
I respect your view, don't get me wrong, but I do not respect these kinds of attitudes so much. Why impose your belief onto people like that? Especially when your main argument will always be that faith is required to understand (which from a more neutral point of view makes no rational sense whatsoever, but that aside).
It creates the obvious issue of a conditional truth. That in itself can not actually even be a real truth. It would just mean the exclusion or ignorance of the potential REAL truth. It's also really just an over-obvious but admittedly clever mechanism of self-preservation of certain ideas.
This is not religion, it is truth.
Is it arrogant to believe the truth?
Because God tells us to.
That is completely wrong.