While sympathising with you I think it's more likely an indicator of driving habit than product failure. Both urban and rural motoring wear brakes in that their are more drivers, more hazards, more junctions, more obstructions, more bends, etc. While you state you don't drive on your brakes, most people do. Most drivers travel too close to the car in front meaning they have to brake more often. Few drivers let their gears slow them. Rural roads can be gritty so your discs can pick up deposits and wear down the pads. Ensuring brakes are cleaned regularly will lengthen lifespan.
