Even Mark had issues with the movie
https://www.yahoo.com/news/mark-hamill-rips-role-apos-145123576.html
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I don't get why people have a problem with Luke exiling himself after the loss of Kylo Ren to the dark side and the destruction of his new Jedi Order when Yoda did the same after Darth Sidious turned Anakin and wiped out the Jedi Order.