I use the command line (or Run... ) from time to time, though not nearly as much as the GUI. I'm a developer and use it for such things as registering/unregistering dll's and controls. I'll use a command window for such things as bulk copies (copy xyz* ... is way easier than selecting files via the GUI) or for the occasional batch file I may write.
I mostly work from memory, occasionally using the /? switch if I forget something.
I would never want to see the command line/window disappear. Ever. It's OK for it to be tucked away somewhere, as long as I can get to it reasonably quickly. I've installed the 'Command prompt here' power toy, so the command window is just a right click away when I need it. Very handy sometimes, especially in these days of looooonnnng path names...
Jeff Mason
Custom Apps, Inc.
www.custom-apps.com