The ancient Greeks may have written all the tragedy the world needs. In the classical definition of tragedy, the character has a tragic flaw, a character defect that will most certainly lead him to a fatal end. In real life, it definitely happens. Juliets kill themselves because their love is dead. People battle alcohol and depression and lose.
People are too daring and lose their lives.
Others are too careless and cause others to suffer. People make wrong choices and end up murdering someone. These stories are in the papers every day. But what people want to see is the victories. The tragedy of tragedy is that it doesn't have to be.