Something she said in the combox about liking the effort involved in reading and pondering complex language so long as it wasn't "affected" reminded me of something St Augustine said in On Christian Doctrine so I'm putting down the quote in full here since I didn't want to load down her combox. It discusses the possible reasons for using more "hidden" and obscure language and how it can benefit the reader. I bolded the parts that seemed to have the most to do with that part of it.
But hasty and careless readers are led astray by many and manifold obscurities and ambiguities, substituting one meaning for another; and in some places they cannot hit upon even a fair interpretation. Some of the expressions are so obscure as to shroud the meaning in the thickest darkness. And I do not doubt that all this was divinely arranged for the purpose of subduing pride by toil, and of preventing a feeling of satiety in the intellect, which generally holds in small esteem what is discovered without difficulty.
For why is it, I ask, that if any one says that there are holy and just men whose life and conversation the Church of Christ uses as a means of redeeming those who come to it from all kinds of superstitions, and making them through their imitation of good men members of its own body; men who, as good and true servants of God, have come to the baptismal font laying down the burdens of the world, and who rising thence do, through the implanting of the Holy Spirit, yield the fruit of a two-fold love, a love, that is, of God and their neighbor;--how is it, I say, that if a man says this, he does not please his hearer so much as when he draws the same meaning from that passage in Canticles, where it is said of the Church, when it is being praised under the figure of a beautiful woman, "Thy teeth are like a flock of sheep that are shorn which came up from the washing, whereof every one bears twins, and none is barren among them?"(1)
Does the hearer learn anything more than when he listens to the same thought expressed in the plainest language, without the help of this figure? And yet, I don't know why, I feel greater pleasure in contemplating holy men, when I view them as the teeth of the Church, tearing men away from their errors, and bringing them into the Church's body, with all their harshness softened down, just as if they had been torn off and masticated by the teeth. It is with the greatest pleasure, too, that I recognize them under the figure of sheep that have been shorn, laying down the burthens of the world like fleeces, and coming up from the washing, i.e., from baptism, and all bearing twins, i.e., the twin commandments of love, and none among them barren in that holy fruit.
But why I view them with greater delight under that aspect than if no such figure were drawn from the sacred books, though the fact would remain the same and the knowledge the same, is another question, and one very difficult to answer. Nobody, however, has any doubt about the facts, both that it is pleasanter in some cases to have knowledge communicated through figures, and that what is attended with difficulty in the seeking gives greater pleasure in the finding.-- For those who seek but do not find suffer from hunger. Those, again, who do not seek at all because they have what they require just beside them often grow languid from satiety.
Now weakness from either of these causes is to be avoided. Accordingly the Holy Spirit has, with admirable wisdom and care for our welfare, so arranged the Holy Scriptures as by the plainer passages to satisfy our hunger, and by the more obscure to stimulate our appetite. For almost nothing is dug out of those obscure passages which may not be found set forth in the plainest language elsewhere.