Obi-Wan understands that the best thing he can do is contribute something positive to the world around him and then to leave. And if he does that, he will in some ways live forever because the good influence of what he did will be felt. It may sound corny but that's kind of the way I feel about contributing to Star Wars characters. It isn't about me. It's about the story. It's about the mythology of Star Wars and the moral implications of that mythology.