Seriously?
There are people who prefer moving coil cartridges right along with their inconveniences because they prefer the sound to MM and MI. There are also MM and MI cartridges that don’t utilize a replaceable stylus system like Grado woodies. B&O MMC, and Clearaudio (although Clearaudio really is user replaceable, just go to YouTube and plenty of people will show you how).
There are also people who use MM and MI cartridges that at one time had a user replaceable option, but now they don’t. Stanton, Pickering, old Grado, Shure. For many people, the aftermarket replacements just aren’t good enough for some reason. If you want to keep your extremely rare and irreplaceable beryllium foil cantilever on you Shure V15 various models and you’ve worn out your Micro Ridge, what do you do? Many people try the Jico SAS and they just don’t think it sounds the same and so the Type IV, Type V and Type Vx stylus will come to me for a fresh Micro Ridge.
I upgrade diamonds and cantilevers on original Shure M97xE styli regularly because now that Shure is out of manufacturing cartridges, people want to keep their original stylus and have it retipped and upgraded to a nude diamond. They don’t want the aftermarket stylus.
On the other end of the spectrum, people have very expensive cartridges and they just want a new diamond. I replace the Gyger S on a LOT of Benz Micro cartridges because I’m faster, less expensive, and trusted. I don’t replace the whole cantilever. I replace just the diamond. Benz charges thousands to do this depending on the model. It’s not that they owner can’t go to the manufacturer. They don’t want to.
I replace EMT, Jan Allaerts, Brinkmann, Koetsu, Kiseki, Air Tight, Dynavector, Benz Micro—anything. I’m just as happy replacing the bonded conical on a Shure Whitelabel and, not surprisingly, I have plenty of business doing those because Whitelabel fans don’t seem to like the Jico replacement stylus.
I enjoy doing them all and I think each job is fun. Getting paid for it is truly a bonus and also necessary so I can keep buying supplies. I listen to awesome stereo, my favorite LPs all night in my headphones while listening to cartridges I just repaired and I have a blast doing it. It’s my favorite thing in the world and I hope I can do it for a very long time into the future.
If you really think MM and MI solve all the problems, then why do MC cartridges even exist?