"There is no life in the void, only death," says Sauron to Frodo immediately after a terrifying "I see you," when Frodo puts on the One Ring at the Prancing Pony in Lord of the Rings: The Fellowship of the Ring. Now, I am aware this scene might never have been a part of the book, but I would like opinions on why Peter Jackson thought Sauron might say this to Frodo.
Possible related to the lies that Morgoth told Men. He perverted the "gift of men" to be the "doom of men".
Death is their fate, the gift of Ilúvatar, which as Time wears even the Powers shall envy. But Melkor has cast his shadow upon it, and confounded it with darkness, and brought forth evil out of good, and fear out of hope. Yet of old the Valar declared to the Elves in Valinor that Men shall join in the Second Music of the Ainur; whereas Ilúvatar has not revealed what he purposes for the Elves after the World’s end, and Melkor has not discovered it.
Sauron carried this on and convinced the men of Numenor to invade the undying lands and take immortality from the Valar.
And he said: ‘The Valar have possessed themselves of the land where there is no death; and they lie to you concerning it, hiding it as best they may, because of their avarice, and their fear lest the Kings of Men should wrest from them the deathless realm and rule the world in their stead. And though, doubtless, the gift of life unending is not for all, but only for such as are worthy, being men of might and pride and great lineage, yet against all justice is it done that this gift, which is his due, should be withheld from the King of Kings, Ar-Pharazôn, mightiest of the sons of Earth, to whom Manwë alone can be compared, if even he. But great kings do not brook denials, and take what is their due.’
He is telling Frodo that the reason he can see Frodo clearly is because Frodo is alive and has stepped into the void when he wears the ring..in this space, normally there is no life, which means Frodo stands out against the backdrop of death."I see you. You stand out in this place bc you yet live."
He (Sauron) is in this position, where he isn't living or dead - he is in a void. He is trying to explain to Frodo that the ring causes that to happen and that he should just give it to Sauron instead of ruining his own life.
This deems him as a good person, in some way, quite a complex character, I might add.