Simply a point that things breaking in that area can be bad and I don't see any reason to take risks in that area. Things don't have to be a tank to be reliable- see Thomson. I think everyone's assumption here is that ti bolts aren't as strong a similiar steel bolt. Are we wrong about that?
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Yes breaking in that area can be bad but it's the same argument people have with carbon bars and a zillion other parts "that can break" and bite your head off. The problem with your opinion is that while you don't advocate heavy stuff in areas where you tried lighter products you do in places where you have no experiance. Look at this topic. The only people who oppose the ti bolts HAVE NEVER TRIED THEM and the only case of failure shown is JD who did a stupid thing and run hollow ti bolts.
So is your theoretical assumption more important than real life testing?
Not to mention that many pros use ti bolts that are not hollow and live. Even some dirt jumpers.