Optional is the big word here. Since Fallout had a "hardcoe mode" that seems to have satisfied a lot of people, I don't see why it shouldn't be included in Skyrim, and I might be a little upset if it didn't.
However, because they know it's optional, they won't optimize it. So while I have to eat, I also have to go to the trouble of opening my inventory and equipping the food, which comes in ridiculous increments like entire loaves and bread, and single pieces of meat from a 100lb deer. And this might have to be done 3 times a day because, well people just assume we can copy and paste our cultural idea of mealtimes into the framework of a game set in a fantasy world.
And it's not purely "aesthetic." The option you present (pretending a need for it) is aesthetic, and pointless. We want eating because it introduces a need, like the need to have a weapon to hurt enemies or the need to wear armor to deflect blows. And the type of character you are determines how you acquire food, what kind of food you eat, and defines you as a person in a living world. If you get lost in the woods, one character will shoot a deer, another will know what plants are good to eat, and another will have to creep slowly back to civilization, knowing that if he get's into a fight he may not survive in his weakened state.