I personally hate rudeness to an almost ridiculous level, but I have to say I've never had an unpleasant experience with security themselves. Back in my first WWoHP visit (which I don't really count as such anymore), I was being completely absentminded and accidentally did something stupid, landing me in the security office somewhere behind Marvel, I think? (Fun fact-- there is this huge Hulk statue just standing there, next to the office which is in an un-air conditioned building. I still don't know why that was there.)
Anyway, they were really cool and understanding and while it was their job to do something about it, they gave me the absolute minimum they could (a year's ban), gave me lots of band-aids and offered me water, all while joking around and sharing a few bits of trivia.
They made a very crappy situation a lot less crappy than it could have been, so I'm biased.