Yeah, but people say ‘Luke would never do that, the scene betrays his character!’ and I don’t agree with them.
I don’t disagree with the direction they took, but it could have been better handled.
What if Luke had looked into Kylo’s future and explicitly seen him kill Han? Then you have the man who couldn’t kill his evil father facing the man who will kill his heroic father (and led to the destruction of the Republic). If they had focused on that drama I think it would have improved both Han’s and Luke’s stories in this trilogy.
It’s a shame that they muddled that message by making Luke surprised that Han was gone.