obiwan and Luke tried to kill people close to them and ran from themselves. Never crossed my mind on the parallels.
In obi-wan case, I felt he was in tatooine to watch over Luke. Not sure of that is right. Haven't seen the movie In decades. Also vador hates sand. While Luke was just retired.
My problem with the movies is it would have been nice if they explained why Luke didn't kill smoke or w/e sooner or why Ben was so keen on his grandpa who turned good at the end.
Not sure why he didn't didn't feel he couldn't snoke. They didn't explain that clear to me. When it comes to forces of chaos it's more what right do you have to let them live.