Suppose you share a house with a half-dozen people. You are all good people, so whenever something seems messy to you, you clean it up. Problem solved, right?

In my experience, definitely not. Because the person who's best at perceiving mess tends to clean things up before other people notice anything. That person feels like they're doing more of the work. Because they are. And they feel unappreciated, because people generally don't notice the messy-to-clean transition.

I'm a recovering sysadmin; I burnt out because I grew so very tired of caring about things that people never noticed until they were broken. What they said then wasn't, "Gosh, I really appreciate how well the printer has worked these many months." They said, "God damn it! The printer's broken just when I need it the most!" I'd love to know how stabby Valve's sysadmins and IT people feel.