I think it may be because we all fear that we could be riding a vintage bike with a bent fork that we never noticed. I recently went back to a bike I bought a few years ago and rode for a while, but then moved to other bikes. Now when I look at it I am pretty sure that the fork is bent, and it makes me think that might be why this bike never really appealed. Someday I will straighten it...or replace it...or neither. But it is the kind of issue that I am now focused on. It is truly a joy to have enough bikes that a bent fork can be a problem that does not have to be dealt with today.
-Will