I didn't get to use CP/M much back in the day but the times I did the experience stood out. Our NHS region used a db/os/programming platform called MUMPS and the main system was on a PDP11 but we had an Apricot CP/M machine with a local copy.
My father-in-laws best friend had a PCW word processor and that was CP/M too :)
My dad ran his business on CP/M. I wrote a game on that for my O level computing and I borrowed a machine from him to type up my degree project. Good old Wordstar :)
I still have wordstar keys muscle memory. In fact, I should add that to the emulator :D