My view on if Willy Loman's family is responsible for his demise.

There are a combination of factors that led Willy to kill himself. Willy was consumed with his own conception of the American dream. He cannot initially come to terms with the fact that he is no longer a successful salesman, that his sons are not amounting to much, and that he has not been faithful even to the one person who loved him no matter what, his wife Linda. His decision to kill himself may have resulted from a combination of the above factors in his life. Willy is ultimately the one who kills himself, who makes the decision, who acts out of hopelessness and desperation. It is his inability to see past the materialistic side of his American dream that leads him to his destructive action, his inability to remember the preciousness of life. He decides that since he can no longer provide for his family and future, that ultimately he is worth more dead than alive. In fact money may be what actually caused his death, or the pursuit of money for the benefit of family and for the protection of his family's future.