"Instructing is a waste of time"

I beg to differ. Instructing teaches you a lot about decision making, how people learn, and how to effectively communicate in the cockpit. I'd agree that spending more than a year/500 hours doing it is less than ideal if you are looking to work your way up the ladder. But I'd hardly call it a waste of time or something to avoid. It's best if a guy can get a variety of experiences as an instructor...instrument, multi, different types.