People who judge you on what you like, especially TV shows (I'm lucky here that no one cares that I like the Rangers, there more curious about the show since they used to watch it when they where kids).
People who just believe stupid rumours instead of getting to know a person first.
People who think they are too good to talk to you and treat you like crap.
Family members who don't give a damn its your birthday (didn't hear from anyone, not even my mom...)
I think my list is endless, so I will end there lol