The Tragedy of Filial Piety

The person who raised me passed away before I could repay him for his care. Someone with no blood ties to me did everything in their power to protect me, while the one who was related to me by blood gave birth to me but never raised me. In the end, I was the one who cared for him in his old age and saw him off. Isn't all of this tragic? Perhaps this is simply how fate arranged things...