The Mary Sue is one of the best-known genre tropes: a character in a book or movie who is “too good to be believable.”
You used to hear the same criticism with regards to Superman; people reacted negatively toward a character who lacked vices – it just didn’t “work” for them.
Yet often these same people are very much opposed to the concept of original sin – that evil resides somewhere in every human heart and none of us is perfect.
It’s just interesting …