Originally Posted by
spare_wheel
Why would this desire rule out carbon?
It may be less crash resistant than metal but in terms of fatigue resistance -- crabon beats any metal frame. I personally switched to carbon because I got sick of wearing out metal frames.
I should also note that carbon is the most repairable frame material and crash resistant crabon frames are available:
http://calfeedesign.com/products/luna/
Fatigue? Wearing out frames? What planet are you on? I think I know what metal fatigue. I haven't seen any metal bike frames die of fatigue, at least not steel.