Anyone still using Windows for anything but gaming is an idiot.
What I really wanted to say: "Most people don't bother with the OS, when it does its job, because there is a myriad other aspects of their life." And I do stand by this. Not because I like it, but because it's my experience with people. They don't rock the boat if not necessary, and frankly, I'm the same, just in different domains.
And so, these people are far from idiots. They just care about different things.