Fair to ask, but 0% crazy to avoid answering – and to get really annoyed.

If those asking the questions (including you) have serious concerns, then take serious truth-finding steps. No, I don’t mean read the candidates diary to discover what they believe on the subjects most different from what you believe. I mean put forward a valid and pertinent hypothesis and test it. For example, “Devout Mormons in military command positions accomplish their missions at a lower frequency.” Or, “Devout mormons in public office make a higher number of unprecedented decisions.” You know, something that actually proves these fears of yours have any merit.