I would have to give this one to the Forsaken to be honest.
For starters, they were once living humans who died during an apocalyptic event. Then they were raised into a state of undeath, controlled by dark magic, and killed their friends and loved ones. Once they broke free, there was no hope of establishing any kind of friendly contact with the living; all they could ever be, at most, were tools and weapons, just as Garithos used them for.
So, they fought tooth and nail to reclaim the lands theyâd once had in life, forced to dwell in dilapidated hovels and ruins. Positive emotions become a rare occurrence for them, they were doomed to revert to a mindless state eventually and serve the Scourge once more, and their numbers were few and barely rising.
They joined a faction consisting of the very monsters that had terrorized them in life a decade or so earlier, because their own werenât able to accept them. The one driving force that kept them going was revenge on the Lich King.
Now theyâve lost their homes again, their only means of reproduction are gone, their Banshee Queen just made them pariahs within the Horde, and theyâre essentially leaderless while Lilian Voss vacillates on whether or not she can be their leader, and Calia Menethil, who has shared NONE of their trauma or burdens, tries to play guidance counselor so they place nice with the living for a change of pace.
The Forsaken story is consistently one of loss, betrayal, and solitude, some of it self-imposed, a lot of it starting from factors well beyond their control.
I cannot think of a race that has suffered more than the Forsaken. All they can do is suffer.