First of all, I'm a new poster on these forums (even though I've been actively reading them since they came online), and I hope I haven't misplaced my thread here.
Now, I'm a big fan of the Warcraft lore, and apart from the last 2 novels I've read all of them and the additional story info found in game manuals, wowwiki, wowpedia and the official site.
Now I'll sum up a few facts the general community here seems to know about the lore (for confirmation).
The Pantheon is at war with the Old Gods (many are still in the universe, 4-5 have been imprisoned beneath Azeroth).
Obviously, the Pantheon are the shapers of worlds and generally the "good guys". Old Gods play the role of "bad guys".
Old Gods and Titans are more or less evenly matched depending on their individual strength, considering the Pantheon almost had to use their full power to be able to imprison the Old Gods beneath Azeroth.
Slaying them was out of the question, it would destroy all life on Azeroth because of the Curse of Flesh that took hold of all life in the Pantheon's absence.
These were the facts, which I think I formed correctly from what I know about the lore (I know I also skipped a lot of side info but it's irrelevant).
Now, here's what I'm wondering:
The heroes of Azeroth (those of us who raid among us) have already slain 2 Old Gods and Arthas as a Death Knight has slain 1.
The first one was slain in the underground Nerubian Empire in WC3's expansion the Frozen Throne by Arthas as a Death Knight (just before he became the Lich King), the second one was C'thun in Ahn'Qiraj, the third one being Yogg-Saron in Ulduar. Now correct me if I'm wrong, but aren't we more or less killing ourselves if we keep this up?
Supposedly we'll be fighting another Old God in one of the Cataclysm raids, that makes 4 Old Gods dead and only 1 keeping us alive (their presence keeps the Curse of Flesh alive on Azeroth, thus it's inhabitants as it was explained by the lore).
Also, if Old Gods are supposed to have a more or less equal power to the Titans, why is Azeroth so "scared" of Sargeras and his Burning Legion?
Sargeras has already lost some of his power by infusing Aegwynn with part of his own essennce to take control of Medivh (who also died in the meantime essentialy "vaporizing" Sargeras' essence trapped within him). Of course he has an "infinite" amount of minions, but they were beaten in the War of the Ancients as well, right? And now we have more mortal races than back then (Orcs, Humans, Worgen, Draenei, Forsaken, Goblins etc didn't exist yet) and we can also call upon the Naaru, the most pure Holy beings capable of incinerating Demons who just come close to them.
In short, why do we kill Old Gods? We know they're evil, but taking them down isn't exactly getting us anywhere either. I can easily see a solution in the lore where the heroes team up with the Mages of Dalaran and the Order of the Tirisfalen to strengthen the prisons which contain the Old Gods and banishing their influence to the mortal races.
And Sargeras hardly seems like the epic bad guy he used to bbe if heroes are already capable of slaying Old Gods.
I might be wrong in some of my claims, and I'd like to be corrected if I am, but I'd also like to hear MMO-Champ's thoughts on this.
Edit: Fixed my claim on Sargeras being corrupted by Old Gods, had a mindfart and linked the wrong bits together...