That was not really interesting, so I'll start a related thread: - why is performance often favored instead of improving, refactoring, documenting, simplifying

That was not really interesting, so I'll start a related thread: - why is performance often favored instead of improving, refactoring, documenting, simplifying, etc. And how can we change that? - why are bug fixes so hard to track? Often developers fix something without marking it as a bug fix. And how can we change that?