Have a carbon bike. Have a carbon seatpost. While footering about on the Interweb came across a Ritchey document relating to their carbon seatposts. It stated in it "we recommend replacing your post every 3 years even if it appears undamaged " .... WTF ! Do these people want us to buy their products or not. Obviously a seatpost is under a lot of stress BUT so is the frame. Should I replace it every 3 years or so ?? Kinda makes worryworts like me a bit anxious !