My carbon road bike is ten years old now. I've raced it, flown it to various countries under the tender care of airport baggage handlers, crashed it more than once, and ridden it for something in the region of 20,000 miles. There's absolutely nothing wrong with it besides a scratch or two. Obviously, it's not a tourer but then, neither is my Columbus Spirit road bike - it wouldn't take a rack either. I'd have no problem riding a carbon touring bike that was built for the purpose.