I use the terminal too much for that. I use yakuake for a quick text based ai interface though. That way I can quickly go like "what's the difference between this and that in Spanish?" when I'm writing something.
I use yakuake for everything, I don't know what I would be missing out from a dedicated term: yakuake has tabs, and splits/tiling, so the entirety of my terminal needs are covered in one convenient and easily accessible place :-)
I'd miss having full screen. I have console full screen on one of my virtual desktops (and I can switch to any desktop with a single key press so in that sense it's the same as yakuake in terms of accessibility). Good point though!