Oh. In general, metal, stone, and wood cutting and polishing.
The thing is that angle grinders aren’t expensive, and in my view, they should pay for themselves in one use.
I do have tons of uses around the house. For example, the main gate of my house needs rust removal before before its due painting. Painter is not going to do that. If I get a fabricator, he’s going to demand 2-5k (depending upon his mood). I can get an angle grinder from Bosch for, like, 2.5k, and it’ll last me a lifetime.
I already have a much-higher-torque/lower-RPM machine from Skil. It has an M13 spindle. Standard angle grinder wheels require M10, though. Even if I make a wheel seat, my machine isn’t safe for cutting or grinding due to its low RPM.