>>11329265 of my 7 bikes have rim brakes, but there is absolutely no way I am going to buy a brand new bike with anything but discs. The first time I rode with discs I descended into a steep, hilly city in pouring rain with a moderate load, and my deore XTs stopped on a dime. I swore I was never going back to rims.
Rim brakes are fine for flat terrain or fair weather commuting, but even on my lightweight road bikes I wish I had discs since I frequently descend steep or long hills and my open pros start fading.