Everything is unnecessary. Some things are nice. Some of the nicest things are those which reduce cognitive load. Anything that makes it easier for my brain

Everything is unnecessary. Some things are nice. Some of the nicest things are those which reduce cognitive load. Anything that makes it easier for my brain to "lex" the wall of text in front of my face is very nice indeed. The fact that my prompt shows additional information is a secondary thing. (It's sometimes nice to scroll back through output and be able to see what directory I was in.) The _important_ thing is that the color and extra space make it exceedingly easy to visually chunk commands and output.