Why exactly is the singer is walking at night through a graveyard while long-ago images of his lover and children are glimpsed through his silhouette?

Because he's a ghost? I mean, I've always thought it was fairly clear that "Fields of Gold" is from the point of view of someone who is dead, but maybe I'm just weird. (I just found out that apparently there is a large contingent of people who do NOT think "Paint it Black" is about death, so maybe they are the normal ones and I am weird...?)