A great series of things your CMS won’t do for you, all true, all issues coming up regularly with a lot of clients. Couple of favorites:
If you don’t know a bulleted list from a numbered list or you have an irrational proliclivity for underlining everything, you’re likely still going to have this problem unless your developer neuters your interface like crazy…and then you’ll still find a way around that, won’t you?
Content management will not force you to write and update your content. One of the best things I’ve heard said about personal productivity is, “The best system in the world still won’t save you from your own crap behavior.”