"Why does God allow evil?"

Why does God allow evil men and women to live? Should He instead kill them before they do evil deeds? Should He judge murderers and rapists now? What about thieves and liars, adulterers, fornicators, those who lust, and those who hate? If God judged evil today, all unconverted men and women would perish under His wrath. Thank God that He is patiently waiting for them to turn to the Savior and be saved from His terrible wrath.