People can't seem to get their minds around being an evil, sadistic, murdering, and then resurecting force is somehow not worthy of its place in the world. People look at forsaken and see the evil and think that they should be removed from existence or at least kicked out of the horde. And though I personally could care less if the horde want us in or not, because I much enjoy the evil dark and twisted tale over the same old Orcs vs. Humans story we have been playing since Warcraft 1 so long ago, I enjoy being evil in a game.
Sylvanas will rule Azeroth someday, and me and the rest of the Forsaken will be laughing at all the weaklings run for their lives. Death to the living.