Something has occurred to me, thanks to a cheeky post from The B-Movie Catechism.
The first fantasy creature C. S. Lewis introduces in The Chronicles of Narnia is a faun. Traditionally, fauns are associated with uncontrollable lust, but Lewis not only depicts his faun as a good character, but allows him to take a little girl home for tea, unsupervised.
Is any Christian willing to condemn Lewis for this? Any? If no one will condemn Lewis for his chaste faun, let us have no more talk of condemning other fantasists for their friendly dragons.