I try and do this after a patch or when I know I have an outage window. It is always good to have an easy way to get SQL Server back to a somewhat stable state.

To all of those that are disappointed in this article.... All this article is pointing out is if master gets corrupted for any reason this is an easy way to get you back to a stable running SQL Server. That is all. It is not meant to be a daily occurance as no one can stop/start SQL Server on a daily basis in a production environment.