Fascinating insight into the mind of a Windows user

The following conversation took place a couple of days ago in my apartment. Matt's my flatmate, Doug's one of Matt's friends. I was in the room at the time.
- Matt: So, Doug, do you think you could go the way of Mac?
- Doug: I already have, really, but I'd never buy one.
- Matt: Why's that?
- Doug: Well — no offense, David — if I were to buy one I'd be getting something a retard could use, and I'm not a retard.
I found this exchange both entertaining and enlightening. Never had I considered the possibility that certain individuals use Windows because it's poorly designed and difficult to use!
There's certainly some sound reasoning behind Doug's stance: Doug is proficient in Windows; gaining proficiency in Windows requires a certain level of intelligence; Doug's proficiency in Windows is therefore indicative of his intelligence.
Why, then, does Doug say that he's switched camps? He's using one of these at school:

- 27-inch iMac
Talk about having one's cake and eating it, too.