Coming from an xApple user, I don't think I hate Apple, but they over sell the "it jsut works" thing, a lot of cases its doesn't really, a lot of things don't work that well on OSX, at least for me..and I know many MANY Other people who feel the same.
Now that I say that, when I sit and try and explain it, Apple users will usually say " thats rubbish" and completely dismiss some things that dont work well on OSX etc, thats where the air of smugness comes along.
Hardware wise ill always love their stuff ( except prehiperials like their Mouses, they haven't ever made one good one I don't think, not that I have used and always gone to 3rd party Razor ones), same for customer satisfaction/ care.
My current hate was their attempt to get the Samsung patents thing, it was idiotic and the judgement pretty much went against Apple today, showing them to be stupid and foolish in their thinking. But thats been a call on some kinda management level.
I think theirs a difference between hate for Apple/ the company..and hate for users, but even when I used all iMacs etc...god I hated how they talked about things in those videos for product releases, its like a tehnological pedo grooming vid trying to lure you in, its just damn creepy.
Also I work as a Graphic designer/ mixer/ music production.
Those might be some reasons, jsut my own reasons tho but having general chats with poeple who sill use macs etc all the time tend to say the same kinda things.