I put on cermic pads when I was in Germany when the car had about 5000 miles on it in Dec 2004. My car has 44,000 on it now. Alot of that was stop and go in Berlin and high speed driving on the autobahn at speeds up to 145 MPH! Yes 145 MPH! Normally I would cruise at about 90-100 MPH. The brakes worked fine and when I left Germany with about 33,000 miles on the car the only problems I had were tiny heat cracks that the German Opel dealer said were normal and my passenger side caliper hanging up a bit after hard braking and then causing a squeak. So, almost 40,000 miles on the pads and the original rotors and practically nothing wrong. And that was under extreme driving conditions as well. The lack of brake dust alone convinced me on the ceramic pad issue.
I plan on replacing the rotors and pads on the front because I believe in preventive maintenance. But I could get another 10,000 miles on these pads and rotors easy. Oh, and as soon as I got the car back here to Florida from Germany, I travelled all thru the US from Florida to California and thru the Rockies and had no problems. Fully loaded with the car going up and down elevations to 12,000 ft.