Remember Huffy pedaling disc brakes back in the 70's? In wet conditions they work exceptionally well when compared to rim brakes. I had them on my mountain bikes and would not have traded them for the best rim brake in the world! On a road bike, unless you ride in wet weather, why bother with the hassle of maintaining them? Cable operated ones are not bad at all, however hydraulic is another level of complexity that I don't want in my life.