Great performance from Mark Hamill but
I find it hard to believe he'd give up so easily on young Ben Solo and even contemplate murdering the kid in his sleep. Even for split second as he claimed. Luke witnessed the madness of Darth Vader first hand.(sorry). Vader was committed to mass murder and fully submitted himself to the dark side. Luke still had hope for Vader, didn't give up on him and rejected the idea of killing him despite what he was told by Yoda, Obi Wan and even the Emperor himself. After persevering through that as a young and inexperienced Jedi, I can't understand why or how he'd lose perspective and think about killing a young padawan, his nephew, whose so inexperienced with the Force and not even as powerful or twisted as Vader. Makes no sense. He's a coward in this movie and just gives up. Kylo Ren isn't even that powerful. They could have delved deeper into this. That's just one problem I have with the movie.