LUKE: But what if this Obi-Wan comes looking for him?
OWEN: He won't, I don't think he exists any more. He died about the same time as your father.
LUKE: He knew my father?
OWEN: I told you to forget it. Your only concern is to prepare the new droids for tomorrow. In the morning I want them on the south ridge working out those condensers.
It occurred to me last night as I was watching ANH (while writing out Christmas cards) that there is a parallel to Anakin in Obi Wan.
Remember that when Obi Wan said this:
...he meant that the personality of Anakin Skywalker had truly died. What makes us who we are is our personalilty, and just as a schizophrenic personality can take over a body and kill off previous personalities, that happened with Anakin. Not just a "point of view," the personality that was Anakin was truly dead (or so Obi Wan believed).Your father was seduced by the dark side of the Force. He ceased to be Anakin Skywalker and became Darth Vader. When that happened, the good man who was your father was destroyed.
But, listening to the first quote above by Lars, it seems as though a similar fate fell upon Obi Wan. What would be the effects on you if you were forced to fight and kill your best friend?
It's conjecture at this point (before we see Episode III), but we can guess that the fight will almost literally destroy the optimism and drive that makes Obi Wan such a great Jedi. After he beats Anakin down (and takes his saber to later give to Luke), he will leave a broken man. Two "lives" are taken that day. The man that was Anakin is "possessed" by an evil demon. The man that was Obi Wan, becomes a distressed and broken hermit, destined to live out his life with the knowledge that he (and Qui Gon ) were instrumental in destroying the Republic, and more importantly, in losing a friend.