Well, I would tweak that to say "there's no perfect/ideal OS (for everyone)". A lot of what makes a good UI (which is the main part of the OS we've been talkin

Well, I would tweak that to say "there's no perfect/ideal OS (for everyone)". A lot of what makes a good UI (which is the main part of the OS we've been talking about) is that it takes relatively little effort for the person to understand [0]. This is highly dependent on the person -- their preferences, modes of thinking, use-cases, and historical usage. Even the "type of user" they think they are can play a role [1]. One person's deal-breaking bug is another person's killer feature. [0]: For lack of a less-overloaded term: "intuitive". [1]: e.g. someone who considers themselves a "power user" might eschew anything that doesn't provide a ton of options... even if the only options available are the ones they would choose anyway.