Hah, my Engineering School in college required drafting courses (one dedicated hand drafting course, one dedicated CAD course) as low level requirements for every major, including Industrial, Chemistry, and Computer engineering students that didn't always know how/where it would come in handy (but there are indeed lessons applicable to everything). It's a general knowledge communication skill, even if you aren't communicating mechanical diagrams, there are still plenty of carry-over to all the other sorts of diagrams we all see in every field.