Back after (literally) years, just to post story speculation (Destiny)
HI bungie.org-ers! This is "The Shrike" from lots of h.b.o posts back in, yes, 1995.
Anyway, I'm Kahzgul now. Hello.
In the interest of full disclosure, even though I'm level 24 as of this posting, I still haven't finished the story of Venus, let alone unlocked Mars. Weird, i know.
Regardless, I have a theory about the story of Destiny that I really hope is true (but which I don't think is because Bungie probably isn't mean like this):
We're the bad guys.
That's right, the "guardians" are a legion of undead super soldiers raised from the grave to endlessly murder all creatures in the universe. The forces of good; a shaky alliance of former enemies - the Hive, the Fallen, the Vex, and the Cabal, *almost* defeated us, but we retreated under the protection of our pale death god where we slowly grew in strength. Now, our scourge has been unleashed upon the universe once again, and this time we're exploiting infighting and weakness among the once noble races.
The time is ripe for our army of the undying to end all life once and for all!
Seriously, I hope this is the plot of the game.