bandera
But disc brakes are far more elegant that rim brakes. They do not wear out a vital part of the bike, the rim.
An analogy he is like the multi function printer on my desk. It is a copier, printer and scanner. If the power supply doesnt work, I have 3 machines that dont work. Rim brakes too are multi function, it is a wheel and a brake. If the wheel is broken again the whole bike is useless.
There is alway resistance to change. Click shifting, and clipless pedals being a couple. Now it is disc brakes. A good percentage of people alway resist change away from the familiar.