That's a good point. I didn't really define what I meant by 'best'. In some cases the code was used, updated, etc... for many many years by people I knew. If people were too afraid to touch it when a bug was found, then definitely not good. But, if people had no need to touch it b/c it works, that's a good spot to be also.
As a pathological counter example think about arcane obtuse code that people are afraid to modify.