Most of my day happens in a terminal. Not because it is faster for everything, but because it stays quiet. A prompt, a few commands, and the screen does not rearrange itself while I think.
I keep the setup small on purpose. A tiling window manager, one editor, and a handful of scripts I actually remember. Every tool I add has to earn the space it takes.
The older I get, the less I want to configure. What I want is a place where the work is the only thing asking for attention.