In many ways, Billy Bigelow serves as a metaphor that reminds us that no man wants to be forgotten; no person is content to be a moment in the lives of others, a negligible experience, an indifferent influence. As forceful as the urge is to live is the desire to be remembered. As insistent as survival is the desire to abide with another.
A man does not achieve fulfillment in his memory of himself but in his being remembered by others. Those who love another are anxious to remember; they know that no one truly die.(Padovano)