The question goes unanswered, but it is a critical line. The dead are easy to love when they are gone, leaving only the best of their memories. The living, or at least the still present, are trickier. Perhaps the dead know this; it might be why they don't come back.

That's pretty profound. I find myself thinking about it in terms of separations and rifts that are less absolute than death's.

Young Alan Rickman is almost unrecognizable to me! ... I have pretty poor facial recognition...