I have a ceramic kitchen knife and its great however because of its design you can't hone it yourself even with diamond hones. It has to go back to the factory and thats the real issue with it. I've told my wife and kids anyone caught using that knife but me will be shot on sight. The blade is very light like nothing, and the slightest torque or spill will destroy it. I don't think ceramic would be practical for a razor. You couldn't strop it or hone it. yes it would last a long time and then there is that brittle edge and microchipping.