This was a quote I read from someone and I agree with it very much:

Sad that in the end people just throw their hands up and say "doesn’t work for you, works for me, oh well."
Good storytelling transcends subjective solipsism. The fact of the matter is that Luke’s actions in this film were not built up to in the previous films at all, and his character is a very severe departure from what he was. He also represents a bold new moral view of this universe, from the makers of this film, which is almost too sad to describe.
Art is an extension of worldview. It taps into what matters most to us. Lucas showed what matters most to him. And what was done to that worldview, and what worldview has replaced it, is chilly in the extreme. I certainly won’t be anxious to show this film to my children, when I have them. 1-6, sure. I do not agree with the values of this film, or the worldview it presents though. It seems cynical, poisonous and nihilistic, especially in light of what came before.
You may enjoy that if you like but there is no denying the shift that occurs. Anyone who denies that shift is very likely blind to the themes of these films.