And then eventually you overgeared Butcher and he was just something you did for "lulz" and because you had a friend who needed the gear.
Replace gear with knowing what to do from reading guides and there's your answer. Which is decidedly less self important than yours.
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And in the meantime WotLK was the epitome of existential moments in WoW, like tortuting someone or killing a person whom you only knew was forced into doing it after the fact. I felt so unheroic that I logged out and stopped playing when they happened.
Existential questions are scarier than simply horror, I can watch a movie for that.