I actually do know one person who gets all high strung whenever you question his taste in smartphones. It's not so much that he's loyal to one brand as he's way too overly opinionated about things he's read on the internet.
He brings up that his phone only lasts about three hours on a charge, I suggest getting an iPhone because mine lasts forever and a day, and...BAM! I'm suddenly being read the riot act, getting an ear full of tirades about slave labor in China and how he'll never buy any Apple products because of it.
So I asked him for his nice big Samsung flat panel. I mean it was assembled in China by Foxconn. Probably in the same building as my iPhone. Same as his Xbox360. He wouldn't give them to me though, cuz he's a hypocrite.
What's worse is that since that day, I'll randomly get emails and facebook messages from him going on and on about the evils of Apple. It never ends.