All the worlds were created only for the sake of man, and his entire value and importance lies precisely in his having the evil inclination.  His task is to strengthen himself to fight it.  The more forcefully an evil inclination attacks someone, the more precious in God’s eyes are his efforts to fight it.  Then God himself comes to his aid, for it is written “God will not abandon him to its hand” — to the grasping hand of the evil inclination. ~ R’ Nachman of Breslov zt”l