Okay, you know what, you just have to stop bringing up the fact that I'm not obsessed with Halo. This has absolutely nothing to do with the discussion we're having now.
I don't want Master Chief to die because I obsessively hate Halo (and I don't even. I liked Halo 2's multiplayer, and I plan to buy Halo 3). I think it would be an interesting direction to take the plot. Master Chief, even though genetically enhanced, is still human. Its possible for him to die, like...Idk, if the Covenant managed to deploy another Ring World, and destroy every living being in the universe.
Having humanity and Master Chief lose, if done correctly (and I'm pretty sure it won't even happen), could be a really good ending. MC has had this near invincibility through all the Halo games, and to have him finally fail in his mission would show that he, is indeed still human, beneath all the armor, circuitry, and genetic enhancements.
I'm not sure how me wanting this kind of ending has anything to do with me thinking Halo's overrated.