Agreed - although I'd have to say I'm a bit of a cynic when it comes to mission and vision statements. They always struck me as one of those 'emperor's new clothes' phenomena which sprouted like mushrooms in the early '90s - they didn't make any useful difference to how well things got done, they just annoyed the cr@p out of grumpy people like me. Most are either anthem-quality statements of the blindingly obvious, or meaningless management-speak waffle.
To put it another way, if you don't know what you're supposed to be doing or where you're going with it, you've got problems that no mission or vision statement is going to fix.