Removing CLI approaches should never be done -- that's the only way that you can write scripts to automate system admin. tasks. They are the quickest, and most generally useful, and are no more difficult than learning to click through a series of dialogs.

Another important thing to keep in mind is that understanding how to use the command line is extremely useful for when you want to write scripts to automate system administration tasks.

Jorge -- You forgot to add "at least, as long as everything is working, and you don't want to do anything that hasn't been programmed into your GUI" at the end.