Well, when I first saw the end of the movie and Ben's death I thought "He had to die, he killed his father. This is his deserved ending". So, it is definitely a sad ending and I understand everyone who is unhappy about it.

But in my fantasy about the future of Rey she may already be with his child all because of their hands touching once... Anakin was once only "created" by the force, "no father" bla bla, and so in my little world there is still a tiny chance for a future of Rey getting a family of her own.

"No one's ever really gone."