I just realized we’ll likely see the Skywalker lineage end with Luke and Leia. I doubt that Rey will be a Skywalker, and I really don’t think Kylo will survive the trilogy.
Luke could still have a kid with a younger woman. He’s only like 53-54 in canon right now.
I suppose it is possible, but I just don’t see it happening. I feel like Luke is too jaded at this point.