David represents anyone who is alone in this world, or at least feels alone. His life was in a rut. His father is dying, his mom is having a nervous breakdown, and his brother has down syndrome. Aside from that he has no real friends he can depend on. David is really alone mentally and physically. Even though the film is very downbeat and sad, I feel that the ending shows how a real man must face the world. We must face it by ourselves.
I truly enjoyed the film and I think anyone with an open mind will enjoy this emotional piece of art.