While I appreciate aesthetics, I am a function over form person all the way. After making my fist serious descent (>10% grade with 10-20 MPH curves for 2+miles) with disks, I can say that I was very happy to have them. Would not do that ride on rim brakes; not that they would fail or anything, I just would not have had the same confidence in their ability to control speed. And i actually like the way they look.
But people should just do what is best for them and respect others right to do the same.