The tragedy of his arc in TLJ is that this is now his chosen identity. He comes to realize that he doesn’t need to be defined by his blood legacy (Vader)…he can be his own person…but in his own mind that person is an unforgivable monster. It’s who he thinks he is “meant to be.”

Because why would he be hiding on an island if he wanted to be involved? It didn’t make any sense. He also looked really upset to see her to me. Look at that face! That is NOT the face of someone who wants to see that lightsaber handed to him!