Related to OP - I have significant religious affiliations, and the truth is, part of my desire to become a physician is grounded by this religious aspect of myself. Like others, I feel an inclination to understand the intricacies of the world - particularly the human body -, but this interest is partly informed by my desire to appreciate the work of a greater power. I have a hunch that adcoms don't want someone whose desire to become a physician is based on something that is often perceived as being flimsy and liable to fluctuation like religion is.