Oh fer cryin out loud. It could not possibly be that people (including pros) prefer the feel/performance of discs that caused their popularity. No, it must be the evil marketing people that are forcing us to buy new bikes with disc brakes and we're all going to lose our limbs from razor sharp rotors cutting them off.
If it wasn't for those evil corporate marketers, Ferraris would still have the vastly superior drum brakes as God intended.