Am I the only one who feels like Kylo, Rey, and Finn are all three lost souls that are trying to figure out who they are? They’ve all now turned away from one life, Kylo from his Jedi past, Rey from Jakku, and Finn from the First Order and his life as a storm trooper. In all three cases none of them had any real say in those initial identities, Kylo was sent to Luke, Rey was left on Jakku to wait, Finn was taken and raised to do one thing.
They’ve all started trying to figure out who they are. I think Kylo thought he had, and is now in TLJ going to realize he still doesn’t know who he is or where he belongs. Rey is really adrift, not sure where she belongs or where she fits in. Finn, I suspect, still wants to run.
At the end of TLJ, I think all three of them are going to be finding themselves a lot closer to the answer of who they really are.