Subtitled "The Value of Screen", this is a brief Linux tutorial on why one might wish to make the CLI (Command Line Interface) your default desktop. It is quite possible to do this in Linux, and even to view graphics without starting X at all.
I get a fair amount of "stuff" from Joe about my use of the command line. I don't do it anywhere near as much as some folks I know, but I do make good use of it, fairly frequently. There are reasons. If I'm using my laptop, it makes the battery last a lot longer. (I haven't measured, but my best estimate is that the battery lasts well over 50% longer in CLI than with the graphic interface running!) The command line is often faster than performing the same tasks in the graphic environment.
Even Microsoft has admitted that a command line shell is THE place to work at times and will be including a very, very powerful shell (code named "Monad") in at least some versions of Vista and upcoming server releases. After years of trying to eliminate as much of the command line shell as possible, Microsoft listened to their users and will give them this tool, which they need very much.
Read this one, over at Linux Planet and see why I, and many others, use the CLI as much as we do. I still have machines (yes, plural) without any type of graphic capability at all and, frankly, love them as text entry devices.