It's the Golden Bough. The King is ritually murdered by his successor.
It's why I asked whether you were a Jedi Master or a Sith Lord in another thread. There are always two Sith, a master and an apprentice, and the apprentice kills the master. The Jedi just sort of hang around being nice to each other.
Darth Vader loses the love of his life, severely burned and disfigured and lives the rest of his life in agonising pain, but it's better than looking that, so I'll say Darth Vader.
Only time i had something similar was in rambo 4 when he's shooting all the asian fellas and you realise that's all he can ever be. no matter what he intends to do life will always lead him down this dark path.
Is this about anti-Oedipus?