OK I'll bite. One of the nice folk at Evergreen, Jill Landers, posted "Top 10 reasons to implement a CMDB". I'll do the right thing and not quote it in full here so you need to go read that first. Then you can enjoy my "Top 10 reasons NOT to implement CMDB"
ITIL Version 3 makes a big ask of the ITSM industry. It will be fascinating to watch how it shakes out. The scope of ITIL is an order of magnitude wider now: how many individuals and organisations will have the knowledge and skills to step up to the new requirements?
The IT Skeptic estimates itSMF International, the "not-for-profit" governing body separate from the 40+ local chapters but owned by the members, turns over somewhere approaching a million dollars annually. They do this without any public reporting of their finances, as far as I can tell.
A Review of "IT Service Management from Hell! Based on Not-ITIL®" by Brian Johnson and Paul Wilkinson, editor Annelise Savill
IT Service Management from Hell is a silly book. And along the way it makes some serious points. A balanced view of anything is far healthier than blind obedience. Give this book to your staff to lighten the mood and stimulate discussion around ITIL.