While I was discussing the services that I needed performed on my Litespeed at the LBS yesterday, I was telling the mechanic that I hadn't really decided on what my next bike would be -- but probably carbon fiber. He then said something to the effect of don't even think about that. I said why not, and he explained that carbon fiber bikes "wear out" after five years or so. I had not heard that one before. He said my titanium bike would last forever. Then he recommended that I should get a much better wheelset (once I lost a bunch more weight)! (Truth hurts on that one.)

Anyway, what about his comment on carbon fiber bikes? I can't believe that someone would lay out $2,000 to $5,000 on a bike that will need to be replaced in five years or so.