Being a fair-weather cyclist, I'm good with rim brakes. I can, however, remember one decent in the past year where I thought it "might" be nice to have disc brakes. I don't know.
I sort of like the idea of disc brakes, but don't think they're really necessary - at least for the type of riding I do. But that won't stop me from using the "but I need a bike with disc brakes" excuse when I get the itch to get another bike.