I am not sure where some of these posts came from, but from someone like myself who road cycles 6000 to 8000 miles per year and has a 3 year old carbon fiber frame, I have never had any problems with my frame... I have never heard of any carbon bike "breaking" unless it was in some MAJOR crash... the same crash that would destroy almost any bike (except cromealloy steel)... That being said, carbon frames are usually the lightest out there, but they can be pricey. Yes, they can be stiffer, but that is a GOOD thing because the power transfer through the drivetrain is better, especially when you have to get up out of the saddle. While riding regularly, especially on the flats, it gives a bit, providing a "plush" ride. I love my Specialized Roubaix Pro, pretty much everything on the bike is carbon, from the FSA cranks to the Specialized carbon stem... But be prepared to spend at least 3000 bucks to get the bike with good components. Ride safe and have fun!