It's debatable. But consider the components of lasagna for a moment. We need sauce on the bottom to help cook and soften the noodle while also preventing the noodle from sticking to the pan. Then we need some cheese in the middle because cheese and pasta are an amazing and very necessary marriage, plus that extra cheesy layer in the middle is just plain awesome. And of course lasagna isn't lasagna without layers, hence the repetition of sauce, noodle, and cheese.