Students primarily don't study for jobs. They study for baseline competency across a broad range of skills. Writing is not just important for the finished product (a written document) but it's also useful to elaborate on and evaluate a person's thought processes, such as the ability to comprehend and analyze information. Students who fail to learn to write are at a significant disadvantage to their peers who succeed.

All creative work, for starters. The SAG has stalled progress on that front. Nobody needs stock photography anymore.