What do we hope to accomplish in the liturgy? The proptiation of our sins through the confection of the Holy Sacrifice and the fitting worship of God. We can still do this in the vernacular. You are basically making the assertion that Latin is the best we can offer (what makes it the best?) and that the vernacular is banal, the “paper plates,” which IS a matter of taste, aesthetics, and opinion (lots of people love Bach’s cantatas, but as I can’t stand to sit and listen to sung German, I’m not able to share in their affection for those particular works of his. I’m a huge Bach fan, however, though frankly, I find Handel’s stuff more conducive to prayer. Why? Because I can understand it). I don’t buy that for an instant that the vernacular is banal, though a translation may be. A word is a symbol for a reality, ie, “cat” is the English “symbol” for an animal that meows, chases mice, washes itself and doesn’t come when it’s called. But “cat” isn’t the reality, any more than “gato” is, or “chat” or “felis.” “Deus” doesn’t come any closer to completely explaining God than “Dios” or “Gott.”
Does God need for the Mass to be in Latin? We both know He doesn’t. Do we need for it to be? Not really. I think it benefits the faithful to be able to understand fully (or as fully as we can). I’ve hear the argument that it doesn’t matter if we understand it or not. Great. Now we’re using a language God doesn’t need and we don’t understand. I don’t see the logic.