My impression is that Mac users tend to look down on Windows—the OS itself not its users, while liking Apple products makes you douchebag, sheeple and brainless victim of Apple marketing.
Maybe that's because the most of Apple users do have experience with MS products which is not always the case on the opposite side.
Truth is, people can get kind of religions about their technological choices, no matter what those choices are (I guess it takes some faith to believe in your choice, when there's no clear answer to "which is best"? ... there never is).