Religious believers clearly have tendencies to make-up "facts" and "evidence" rather than accept true research and admit even the simplest of belief failures. They have strange ceremonies that are virtually pointless but are said to have special significance or power.
We all know certain 'Christians' alive today who are fully prepared to argue that they might never die! Couldn't it be argued that such a reversion into childlike fantasy is a telltale sign of mental illness? Isn't it a self-replicating insanity when part of the illness drives the sufferer to convince others to regress to their level and contract the same illness? Sounds severe, almost like a pandemic.
Some might go as far as to call religious belief a contagious disease.