I do believe that most men live lives of quiet desperation. For despair optimism is the only practical solution. Hope is practical. Because eliminate that and it's pretty scary. Hope at least gives you the option of living.
Human memory is a marvelous but fallacious instrument. The memories which lie within us are not carved in stone not only do they tend to become erased as the years go by but often they change or even increase by incorporating extraneous features.