One way or another, it could be argued that Luke had fulfilled what the Force required of him. He cleared the galaxy of Sith control.

He sinks into Obi-Wan's touch, eyes closing. "I don't blame them. I try to not make their lives any less for having me pass through it. It's really all I can do for most people." Leave more good than not. "Let them see that while I didn't choose to be here, I don't want to terrorise them or their way of life. Just share my own."