> I would rather have a manager that had a reasonable knowledge of how difficult programming is so that reasonable expectations can be made about schedule and budget.

True. But the trouble with programming is that once you have the basic skills, you start thinking that anything is possible. Yet, the real problems start knocking on your door when you want to build large real-life long-lived systems with changing requirements.

Take for instance the issue of "technical debt" or "code rot". Someone who has had just a little exposure to programming might say that those issues don't exist (how could code "rot"?), whereas a manager with no programming experience will more easily accept them as part of life.