Even though I majored in CompSci, I still remember my college essay class and learning about primary and secondary sources and their relative quality, how to craft an argument, and how to articulate your argument to be persuasive. Outside of just writing, those skills have been useful in other scenarios too (like when subconsciously evaluating someone else's argument)

Of course, I still treated it like a lazy college student: I did it in 2.1 or 2.2 line spacing to hit the page requirements, and flipped my thesis because it was easier to research (I started out arguing against the US invading Iraq, but found it way easier to find sources that supported an invasion... well, we all know how reliable those sources were).