The traditional monster use-case for screen is making your login session independent of the terminal connection. So you can do your work from home, detach your

The traditional monster use-case for screen is making your login session independent of the terminal connection. So you can do your work from home, detach your screen session, go to work, re-attach from work, and continue where you left off. If your terminal connection dies, you can just re-attach from a new connection. It also offers other convenient session management functions like multiplexing of multiple shells (maintaining a separate screen image and scrollback for each), cut-and-paste, etc., but the above is the big one I think.