Ending???

Ending of this story is so tragic. Jocasta suicided herself, because of the shame and sorry for Laius. When Oedipus saw Jocasta, he pierced his eyes himself. Then he left city with give up everything even his position of the king. They are so….. cruel family. They choose too hard punishment for themselves. Lauis killed by his son, Jocasta suicide, Oedipus pierced his eyes. Who can say they are normal family? When I read the ending I really felt…. Pity and sorry. I thought it will be happy ending. Because of most of old story finished with happy ending and this story don’t have any good things before ending. Also i really couldn’t get the what author want to talk about. This story has just tragic ending with no teaching. Everything goes what oracle said, and nobody can’t changing that oracle. Even if they try best to changing bad things, nothing changed. Just I am wondering about if Oedipus was humble person not as arrogant and ambitious person. then he may not be a king of Thebes. Also the ending of the story can be changed a bit. I want to know about why author wrote story so tragic without comedy or any other positive things.