The realms have different rules. An argument within/for/against a particular religious belief, such as a gut feeling or reference to a religious text, doesn't work in science. In a similar way, it doesn't make sense to use the rules of science to support/refute religion. To assert that there is no evidence for a religious belief is essentially a religious argument, not a scientific one.
Even if there are different realms, I don't see how I (personally) can use different ways of reasoning in these realms. I'm quite certain that believing in some afterlife (as opposed to total oblivion after death) would make me much happier. But I cannot choose to believe something that is wrong or at the very least totally arbitrary according to my usual logic. It feels no different to me than wanting to believe that there is no massive government surveillance, even though I have followed the news for the past few months.
