A relationship has changed. A man and a woman who have shared so much in life; have loved so deeply; have become one with one another. The man's heart is slowly torn apart as he watches the ravages of Alzheimer's disease take the love of his life's mind to a far away place that doesn't include him. He can recall each precious moment; each gentle touch; each wonderful moment in time, yet, it seems that the more he can remember, the more she is forgetting. He loves her so much and the pain of watching her sink into her new world without him is proving to be more painful than her inevitable death. She disappeared into another place long before her death. The house is all that is really left of their time together. The house is the only thing left now that holds anything tangible meaning for him to hold on to. It is where she was, is only in his memory now. Climbing that old tree showed him how tightly he was holding on to those memories and how much she had so wonderfully consumed his life. After reflecting on it all, he decides that life is not worth living without her really being there anymore. Death is the only thing that can ease his pain. Sad but lovely story of love and devotion. I don't know why the song was written or even if it was a track from a movie. When I first heard it there was just something about it that moved me. I am probably way off base here, but it is what I feel about the song. My interpretation.