There is no argument that will sway me. No matter what you bring to the table, and I like to think I've heard it all, but there is nothing you can say to change my mind. And I only mention this because it came up tonight, and I feel I must preserve my opinion in blog form for posterior's sake.
Simply put, once Anakin had opened himself up to the whole of the force that the dark side represents, he was operating on such a whole other playing field from Obi-Wan that nothing Obi-Wan could even have dreamed of doing with the force would have stopped Anakin from killing him.
The absolute and only reason that Obi-Wan lived was to provide continuity between the light and dark sides of George Lucas's Star Wars. We can all accept the originals for the brilliance they provided, but I personally find them overshadowed by the crap that eventually gave us the origins of the conflict.
And to cap it all off, we have to sit through that final battle scene. I'm sure I've had something to say about it, because I'm quite certain I covered these movies when I finally was bothered to see them. I really did put it off for a good long time. Again, it wouldn't come up except that it already came up once tonight. Posterior and all that.
Okay, you want my reasoning? You want more of my point? Because it always seems like people tend to disagree with me, and I have to bring up the younglings. Remember when we see the aftermath in the secret Jedi headquarters? Remember everyone being dead? Yeah, Anakin, fully embracing the entirety of the force.
Somewhere awaiting the epic battle we have Obi-Wan, eventual nearly hero. He does help Luke focus on the force, but now we know it's just a bunch of meta-chlori-someshits in the blood. I'm not even getting into the fail that this is in being instrumental in ruining a great story line.
The real point is that, Obi-Wan, being the good little Jedi, was trained to only accept some part of the force as being good. He's only willing to use a certain amount of this power. He spends a lot of time learning how to use this narrow bandwidth of force.
Anakin, on the other hand, has also been training in that one part and has proved himself adept. He also has been drawn to the greater power of the entire force, including the part that lies outside what his current associates are practicing.
I can see no reason for Obi-Wan to have survived. Anakin should quite successfully have killed him a number of times in the final battle. He has the reason that seems valid to him, and he's accepted the whole of the force by being willing to destroy entirely anyone he feels stands between him and his goal. If nothing else, his destruction of the whole of the Jedi temple, and especially in light of the younglings killed, he was willing to accept such power as to be unstoppable. The very limits Obi-Wan and all the Jedis accepted and forced on themselves were their downfall.
And really, that is my youngling argument. The power it took for him to destroy all the Jedis and allowed him to accept the destruction of the younglings was more than enough "dark" side for him to easily finish off Obi-Wan.
The only reason Obi-Wan survived, given all that, was, he had to. Which to me means some sort of George Lucas director fail. I don't want it to be that, and I don't wishe Obi-Wan dead, but given what I've seen, I just can accept the outcome. It's almost as bad as Jar-Jar. Period.
And seriously, this post wasn't part of my night a very short time ago. I really didn't mean to come home and blog. I haven't even taken my jacket off or even smoked since I've been home. It's all posterity. I had to record it for time imemorial. You'll thank me one day when you find yourself citing this blot post to justify your dissatisfaction once the Lucan canon somehow becomes scripture and we find ourselves justifying ourselves based on that, Luke and Indiana competing for our obeisance and offerings.