Chosen answer:Because he came to the conclusion that he couldn't win, so the best solution, long-term, was for him to hide away somewhere to be ready to help prepare the next generation for the fight. If he continues the fight, he risks his own death and the loss of his ability to pass his knowledge on later, which could leave the galaxy under Sith rule forever. If he runs, then the Sith will rule for a time, but there's a far greater possibility that the Jedi will eventually be able to rise again and defeat them.
Chosen answer: Because he came to the conclusion that he couldn't win, so the best solution, long-term, was for him to hide away somewhere to be ready to help prepare the next generation for the fight. If he continues the fight, he risks his own death and the loss of his ability to pass his knowledge on later, which could leave the galaxy under Sith rule forever. If he runs, then the Sith will rule for a time, but there's a far greater possibility that the Jedi will eventually be able to rise again and defeat them.
Tailkinker ★