and of all the Elven-rings Sauron most desired to possess them, for those who had them in their keeping could ward off the decays of time and postpone the weariness of the world.
Sauron very intentionally made rings (had them made under his direction) and gave them to men and dwarves for the sole purpose of corrupting them to his control.
It was part of Sauron's scheme to ensnare and enslave the users of all the rings of power and so control the Noldor of Middle-earth. Sauron planned for the domination of all of Middle-earth and he needed/wanted to control the Elves to complete this plan.
He did not know they were made when they were created, though one might think that Sauron would assume the elves would continue to make more Rings of Power - in fact he was counting on it. If the 3 Elven rings were unsullied by Sauron, why did they lose their power when the One Ring was destroyed?
Sauron, of course, intended to use the One Ring to control the bearers of all the other Rings of Power. The elves, however, were too intelligent and once they sensed that Sauron had created the One Ring, took their Rings of Power off.
Another aspect that the series explores is the decision to forge three rings. As Galadriel, Celebrimbor, and Elrond (Robert Aramayo) discuss after the process has already started, it is a way of preventing the concentration of power in a single being's hands.
The first is that Bilbo is a hobbit, and as such, is particularly difficult to manipulate or corrupt. Hobbits have a natural resistance to the influence of the ring, because they are fully content in their simple lives and have no desires for power or war.
Sauron wants Galadriel to become his queen because she's useful, says Vickers. As he's already shown, Sauron can accomplish his objectives much more quickly when he has a highly regarded Elf warrior to get him into places like Numenor and Eregion (where Celebrimbor lives).
Creating the Ring simultaneously strengthened and weakened Sauron. With the Ring, he could control the power of all the other Rings, and thus he was significantly more powerful after its creation than before; but by binding his power within the Ring, Sauron became dependent on it.
According to Tolkien Sauron wasn't actually reduced in power while not in possession of the Ring (Letter 131): While he wore it, his power on earth was actually enhanced. But even if he did not wear it, that power existed and was in 'rapport' with himself: he was not 'diminished'.
As part of his conquest, Sauron wished to take control of the Elves and add them to his army, as he viewed them as the most powerful of all the Free Peoples. Sauron took on the fair appearance of Annatar, the "Lord of Gifts," who seemingly wanted to share his knowledge of crafting with Elven craftsmen and smiths.
Bad characterization. Choppy dialogue. Characters who don't make sense and clearly dislike one another as much as we dislike them. Everything feels forced and contrived, especially in the Galadriel storyline.
However, the mere fact that the Valar didn't prioritize perusing Sauron proved he was a much lesser threat than Morgoth. It made perfect sense because Morgoth was a Valar, and Sauron was only a Maia. So, while Sauron was evil, Morgoth was clearly much worse.
Maybe the most obvious choice at this point, Adar (Joseph Mawle) is a Dark Elf, one often called "father" by his Orc children, implying maybe he is Sauron.
Because Sauron lost his Ring, his power severely diminished, and it took him thousands of years to rebuild his power. Even after Sauron declared himself again, his sole focus was on finding the Ring, not on solidifying his dominion.
She already feels an outcast after Gil-galad tried to send her back to the Undying Lands, and she fears that if she reveals what she has done, it will be the final nail in the coffin. Instead, when Elrond pulls her from the river Glanduin, and she races back inside to Celebrimbor's forge, she chooses to stay silent.
Tolkien also stated that Sauron saw Galadriel as his equal, and therefore, in his rise to power he feared that she would go after that power herself. As we saw in The Fellowship of the Ring, Galadriel told Frodo that the One Ring would consume her and turn her into a Dark Queen.
Plus, he makes the compelling argument that while he lusts for power, she has a good heart and would help him remain good rather than turning to evil. But when it becomes clear to Galadriel that Halbrand/Sauron cannot tell the difference between “saving” and “ruling” Middle-earth, she rejects his proposal.
Hobbits are simple creatures and do not wish for much, so there is nothing for the Ring to use against a hobbit. Frodo is the hobbit that is corrupted the most next to Gollum and Bilbo, which is why he is unable to throw the Ring into the fire. But even Frodo remained good at his core.
The Ring's effects
Inversely, the hobbits' good-naturedness and lack of ambition makes them less susceptible to the Ring's promises of power, as in Frodo and Samwise Gamgee, who are able to handle the Ring for extended periods of time.
Frodo asks Gandalf to take the Ring, but the wizard refuses vehemently. With the Ring, Gandalf says, he would become too powerful, and he would inevitably be corrupted like Sauron himself. Even if Gandalf took the Ring simply for safekeeping, the temptation to use it would be too great.
She's an Elf, So Has a Very Long Lifespan
The first and most obvious reason Galadriel gets to hang on to her Ring – Nenya, the Ring of Water – from beginning (i.e. its forging) to end (the destruction of the One Ring) is that she lives long enough to do so.
The Rings of Power were made using the craft taught by Sauron to give their wearers "wealth and dominion over others". Each Ring enhances the "natural power" of its possessor, thus approaching its "magical aspect", which can be "easily corruptible to evil and lust of domination".
So, instead of risking the truth in Rings of Power, Galadriel did her best to ensure their creations were stable enough to resist any influence Sauron might have had. In allowing the creation of the elven rings, Galadriel believed she could use their power and influence balance in Middle-earth.
Sauron feared her
Among Tolkien's commentaries and notes, however, is the statement that Sauron himself saw her as his equal, and was consequently worried about what she might (and could) do if she so chose.