With respect to Darth Angelus and the rest of you in the conversation, trying to make sense of Jackson's effect driven movie does not interest me. But if you'll bear with me, I'd like to make a few remarks about Gandalf from my interpretation of Tolkien's story.
I recently posted in
Why wouldn't Aragorn claim the throne of Gondor? about Aragorn's name from his mother... Estel... translated as Hope. He was her hope. He was the hope of the Dunedain. He was the hope of Men. But the role he really fulfilled to the world was that of King, the bringer of peace and the dispenser of justice. It was Gandalf who brought hope to the peoples of Middle-earth. Here's a quote from
The Silmarillion (Ainulindale)...
"Of Melian much is told in the Quenta Silmarillion. But of Olórin that tale does not speak; for though he loved the Elves, he walked among them unseen, or in form as one of them, and they did not know whence came the fair visions or the promptings of wisdom that he put into their hearts. In later days he was the friend of all the Children of Iluvatar, and took pity on their sorrows; and those who listened to him awoke from despair and put way the imaginations of darkness."
Just so you know, Olorin is Gandalf. From
The Two Towers...
“Many are my names in many countries: Mithrandir among the Elves, Tharkûn to the Dwarves; Olórin I was in my youth in the West that is forgotten, in the South Incánus, in the North Gandalf; to the East I go not.”
In
Unfinished Tales (The Istari), Tolkien makes it clear that Olorin is hesitant to join Curumo (Saruman) and Aiwendil (Radagast) on their crusade to assist the remnants of Elves and Men against Sauron... because he knows Sauron is much stronger than he. And then in The Return of the King when Pippins asks if a new and improved Gandalf the White will look into the palantir and do battle with Sauron, Gandalf replied, "
I am not ready for such a trial, if indeed I shall ever be so."
I think it is clear Gandalf, even Gandalf the White, even considered himself inferior to Sauron without the Ring.
In my recollection, Gandalf was relieved he did not have to battle the Witch-king when the gates of Minas Tirith were broken. I don't know what the outcome would have been. But Tolkien gives us many examples of supposedly weaker creatures defeating more powerful creatures... Turin and Glaurung, Hurin and the Troll guard, Ecthelion and a Balrog, Glorfindel and a Balrog, Sam and Shelob, Fram, Bard and Smaug... And the Witch-king was no longer remotely human.
Gandalf wore Narya, one of the Three Elven rings made by Celebrimbor, and wielded Glamdring, a fell sword forged in ancient Gondolin by Noldorin smiths who probably came from Valinor. He was no slouch at fighting... but it was not his forte. Gandalf excelled above all others in Middle-earth at encouraging. Could anyone else have persuaded Bilbo to take a vacation from his gentrified life and become a burglar? Could anyone else have brought Theoden out of his malaise? Who else could have rallied Minas Tirith after Denethor's descent into madness, Boromir's death, Faramir's injury, Rohan's seeming unresponse, and with Nazgul overhead and Sauron's hordes pounding on the gates?
Everyone wanted to name him as a bringer of bad news and a herald of woe, but that's because he went where people were most quickly falling into despair.
He also connected people with friends and allies. He brought Sam in as Frodo's friend. He wrote a letter of introduction for Aragorn to Frodo. He insisted that Merry and Pippin stay with the party after Rivendell. Elrond became the Fellowship's sponsor at Gandalf's urging. He got rid of Wormtongue and brought Aragorn to Theoden's aid. He encouraged Eomer's release. He enlisted the Ents to join the war... and got a host of Huorns along the way. He gave the palantir to Aragorn. He introduced Merry to Theoden. He brought Pippin to Denethor and Faramir. He convinced Theoden to ride to Minas Tirith. And oh, by the way... he was instrumental in bringing Dain and Bard together so that the North was able to keep from being overrun in the War of the Ring.
How and why did he do this? Was it mere altruism? Was it hatred for Sauron? I think it stems from who he was made to be. He was of the Maiar (lesser angels) of Manwe and Varda, the two most regal and holy of the Valar (greater angels). Manwe and Varda knew more of the mind and heart of Eru (God) than the other Valar... thus they were the wisest, most patient, and merciful. Olorin/Gandalf served them. He stayed steadfast to them while Melkor (Sauron's boss) seduced many Maiar to his cause. Olorin/Gandalf loved the living light (the grace) of Varda, the wisdom of Manwe, and their reverence for Eru. This is why he loved the Children of Eru... the Eldar (Elves) first, and then later Men, Dwarves, Ents, and Hobbits. He was not created as Tulkas, Ulmo, or Orome... he was to be a helper, a teacher, a counselor, a cheerleader. Sauron and the Balrogs all came from Aule's service... they knew strength, steel, sweat... and fire.
Gandalf was not intended to fight such as these. He was intended to stir up his friends hearts to bravery and good deeds. Of all the people chosen for the Fellowship, none were truer than the first two... selected by Gandalf. Frodo and Sam. Sam was steadfast and Frodo was faithful.