I don't think your friends cling to their religion out of childish character, but simply out of fear -- fear of letting go the organizational fabric of their ontology.
I know plenty of religious people who are pretty damned smart, and outside their religious compartment are skilled critical thinkers. But apostasy has dread connotations to the erstwhile believer.
I know plenty of religious people who are pretty damned smart, and outside their religious compartment are skilled critical thinkers. But apostasy has dread connotations to the erstwhile believer.