why is the protagonist jimmy porter not happy

Jimmy Porter is the play's main character. He is the "Angry Young Man" who expresses his frustration for the lack of feelings in his placid domestic life. Jimmy can be understood as both a hero for his unfiltered expressions of emotion and frustration in a culture that propagated unemotional resignation. He can also be considered a villain for the ways in which his anger proves to be destructive to those in his life.