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What I mean is that your character story would not portray you as the hero saving the mmo world. There may well be an all-encompassing threat and you may well be a foot soldier or archer in the army or a sailor in the navy that fights it. You would see everything that happens but the npc's would not be hailing you once victory is achieved, rather you might get a pat on the back from a fellow soldier and a ration of rum.
Given the massively part of mmo's this would strike me as slightly more credible than most 'every-player-the-hero' stories.