Are you booting into the command-line environment when you want to use only the GUI? Or are you finding that you’re already booting into the GUI and you would rather boot to that nice, clean, black-and-white command-line screen? You’re not stuck with either of these options. You can change them at any time.
You can press Ctrl+Alt+F# (F# refers to function keys F2 through F6) to change out of the GUI to a command line terminal at any time and then Alt+F7 or Alt+F8 to switch back.