Jesus Christ not the breaking of pasta thing again. You don't have to break pot sized spaghetti.
Pre-grated cheese is one of two things: old and flavorless, or old, flavorless, and full of sawdust. No, seriously, I'm not kidding. Like black pepper, hard cheeses like Parmigiano-Reggiano and Grana Padano lose much of their flavor if they're grated too far in advance. Little is gained in exchange for the convenience of not having to grate one's own.
Even worse are those shelf-stable brands, which not only lack flavor but add filler like cellulose (yup, basically sawdust) to keep the powdered cheese from clumping. We don't want that on our noods, do we?
Yes we do. I have used it for years growing up and I still do. And Kraft just reformulated their ingredients and it also features a used by date. Do I need to go out to OXO get a cheese grater and buy a chunk of cheese?