If CF bikes were actually less safe, or more prone to breakage, they would have vanished years ago; the bike industry is pretty unforgiving for slack standards. So it's a matter of pure personal preference -- steel, alu, ti, CF, even bamboo! -- what you want under you when you pedal.

I'm glad for those of you that have found CF to be more vibration-forgiving; every carbon piece I've EVER used has been the opposite! So ride on, dudes -- you'll pass me as I pound along on my alu beast. Just smile and wave......