Kurt Vonnegut, religion and social laws.
When reading Slaughterhouse-Five it is extremely noticeable that Kurt Vonnegut attempts to open your mind beyond the limits that society established once as untouchables. As a beginning, for Vonnegut "most human behavior, no matter how ghastly or ludicrous or glorious or whatever, is innocent," , according to himself in his autobiographical book which name is Palm Tree. So, since for him human attitude is innocent, human laws and norms are ridiculous and try to control you trough politicians or anyone else, and also religion is ridiculous and tries to control your life in the name of God whose existence is doubtful. .
The sarcasm and careless for things that Billy Pilgrim shows in Slaughterhouse-Five reflects Vonnegut's careless for everything since human is innocent. What could be important in a world controlled by naive humans who live in a false atmosphere? At least Billy Pilgrim with his attitude tells us that nothing. One example is when Billy was captured by the Germans. He showed no fear or saw them as cruel as they maybe were, they were simply enemies that he did not even hated. He even was concentrated in other details: "Billy looked up at the face that went with the clogs. It was the face of a blond angel, of a fifteen-year-old boy. The boy was as beautiful as Eve." (Vonnegut p.53). .
A strong point in saying humanity is ridiculous in arguing about free will or rights or anything worth fighting for, is that everything is already structured and we cannot change future. From that point of view is ridiculous to defend something, and every attempt of education and moralization in order to prevent evil is ridiculous and its one and only objective is to control our lives. Billy is a comic and innocent guy who is victim of the destiny since free will does not exist for him.