In the end, if there were no "bad guys" in a story, the heroes would never choose to rise up. Who is Aladdin without Jafar? Or Peter Pan without Captain Hook? We should thank the villains because without them, there would be no heroes.
Der letzte Mann [The Last Laugh] - F. Murnau 1924 - -- "A hotel doorman, who takes great pride in his job, is demoted to washroom attendant because of his age. Unable to cope with his humiliation & loss, he stoops to new lows.