You're missing superior stopping power in bad weather conditions. I had rim brakes (Shimano 105) fail me in bad weather (pouring rain, road grit) resulting in near crashes on a regular road bike. I never rode a road bike in bad weather since then. Once I've gone disc brakes I never looked back. Discs never failed me in deepest mud and heaviest downpour. And I don't care if it adds few pounds. I'm past that chapter in my riding where I care about bike weight much. I just can't imagine riding with rim brakes cross country, in mud, rain, sand, etc. On my commuter, MTB and future touring bike I want disc brakes, that's my preference. If rim brakes work for you that's great.

Adam