Death cures psychoneurosis. In a sense all these neurotic concerns--fear of rejection, interpersonal concerns--seem to melt away, and people get another perspective on their lives. The important things are really important, and the trivia of life is trivialized.
Most of us are convinced that we are our egos, which is who we think we are. The ego is part of our incarnation. It dies with the body, which is why we are so afraid of death. Death scares the hell out of who you think you are, especially if you think you are this body.