Same here, I picked up LaTeX to take notes in my computer graphics class because I didn't feel like writing it (my written equations were always pretty cramped, and my handwriting is garbage) and because it was a pain to represent equations in LibreOffice (what I'd been taking notes in before).
It was proof heavy so there was a lot of English anyway. Add copy/paste for derivations with a lot of shared structure and it really pulls ahead. If you define your own macros and are good enough at programming them on the fly it's a neat though dumb Lispy symbolic math tool.