You keep saying 'I had to' like you didn't have a choice. I don't believe you didn't have a choice. I just don't buy that. You still haven't successfully explained to me why you had to join the Sith or turn Dark Side, or kill Aunt Mara, or any of those things. I don't believe you had to use the Dark Side to accomplish anything. And if you did, was it worth accomplishing - truly?