Here's something that always bothered me about LOTR. You know who the biggest bastards in Middle-Earth are? It's not the orcs, it's not trolls or any other flunky. It's not Saruman, it's not the Nazgul, it isn't even Sauron himself.
It's the Eagles.
Why? Simple. They have overwhelming numbers in the air. They are a near-unstoppable force. Even at the height of Sauron's power, with the Host of Gondor sitting at his gate fully inside his trap, with the battle raging and the outcome assured, the Eagles come sailing in and dive-bomb the Nazgul. Why? Because they're tough bastards, and despite the terror and power of the Nazgul, the Eagles have numbers on them, and could drive them right out of the sky.
What does this mean? This means that the safest, fastest, least costly and most effective way to get the ring to Orodruin would be to outfit about 200 Eagles with Gandalf, Aragorn, the Ring Bearer and maybe fill the rest out with archers or something, and have those bad boys sail right over the Ephel Duath from a base in eastern Rohan and drop that sucker in the Cracks of Doom.
The whole War of the Ring would have been mop-up duty. They could have saved the whole Fellowship instead of losing Boromir and Gandalf (sort of), they could have averted Saruman's treachery for the most part and they would have saved countless lives. Theoden would be alive, Theodred his son, countless warriors from Gondor and Rohan would be alive or unmaimed.
But would the Eagles do that? No. Those bastards had to sit around on their inaccessible perches way up in the Misty Mountains chewing on their sheep and basically loafing around while all the world trembled under the threat of Mordor. Finally, after all appears lost, only after thousands die in the Pelennor Fields, only after who-knows-how-many perish at the Morannan, only then do these putzes get off their tail feathers and get involved.
The Eagles aren't heroes. They're lazy bastards who care for nothing but themselves, and only get involved when it appears a near-certainty that Sauron will win and overrun all of Middle-Earth. Only THEN do they finally care.
Jerks.