I used to have this same fear, until I started using carbon bars. There’s something about the whole catastrophic failure face-bar-stem-interface worry thing that put me off a bit.
Later I remember reading on the Raceface website and seeing that they gave their aluminium Deus XC bars a warranty of 1 year or 2, whereas the lighter carbon Next XC bars had a warranty of something like 10 years! It sort of brought the point home that carbon, if treated sensibly, is a lot stronger than ally.
IIRC carbon has a way higher fatigue strength than ally, but suffers bigtime if its ultimate strength(?) is exceeded. So it’ll last for ages if taken care of.
(No doubt there’ll be someone along to tell me how wrong I am in a minute)
I’m quite happy to use carbon bars now.
Carbon stems do give me the proper plural feacal matter though..
TJ, it seems would like a carbon fibre flag, perhaps, for his bike?