I've always found good fiction enlightening. There is no need to be so serious about it.
My biggest criticism of religion is the very boundary drawn between fiction and scripture: that adherents to a religion must treat fiction as if it is reality.
All too often, that means obsessing over obedience to a structure of rules/dogma, instead of confronting the reality right in front of us; like voting to restrict gay marriage so God will bless our country, instead of learning to empathize with people around us to become a better community.