I wish I had written this myself. Please read this:

http://blogcastrepository.com/blogs/skatterbrainz/archive/2008/12/07/5-group-policy-myths.aspx

In it, he dispels the following myths:

1 - Group Policy is Hype

2 - Group Policy will Break Your Network and Clog the Pipes

3 - Group Policy Takes an Expert to Make it Work Properly

4 - Group Policy is Great for Deploying Software Installations

5 - Group Policy Still Needs Scripts to Complete the Job

 Enjoy!

 LiliaG, Group Policy PM aka @superlilia