"I don't get disc brakes" on on-road bikes.
@RollNYC ... I get the sentiment, completely, but I think you'll see that they start appearing very soon (2013 or 2014 latest) on full-on road/road race bikes.
The UIC has already 'legalized' 'em for 'cross; it's (really) just a matter of time before they do so for road racing.
There's already a company (in the States, I think; can't remember the name) producing full cf road bikes disc only; they will sell.
They make an awful lot of sense in many ways (modulation; rim wear/weight); when (I think it's inevitable) one of the big gruppo mfgs (e.g. Shimano) jump on board, and produce an electronic/hydraulic brifter, the days of rim braking on road race bikes are numbered.
Just sayin'
