It always amazes me the emotional attachment people have with opinions about bicycle components and technology. Disc brakes for road bikes is the latest example. Especially when in many cases, the opinions are based on very limited experience with an extremely small sampling of the incredibly wide range of examples of brakes of many types, of many levels of quality and a long history of development and a huge range of different usages, conditions of use and skill levels of users and assemblers. There is more than one good way to do most things. They all have their advantages and disadvantages. They are all better at some things and not as good at others. Some examples of each type are better or worse than other examples and other applications. As time goes forward and usage increases, they tend to get better.
vive la différence!