The one I’m on has a very functional “search and install” app, but I still find myself habitually opening up terminal for installation out of “fastness”. Maybe it’s a poor impulse I should correct.

Probably the biggest thing driving terminal use is opening and configuring system files. You can do that with the file explorer and an elevated text editor, but a lot of guides aiming for conciseness will give you some command to wget a long file online, then insert content into a text file by path in one line.