Quite simple, really: You realize that, at the end of it all, after all the journeys and all the conflicts and all the danger, when it came down to it, when it was almost over...you failed it. Everyone put their faith in you, and you betrayed them.
If there'd been no Gollum, et al, you, personally, would've been responsible for the enslavement of all to Sauron.
That's got to be a lot of guilt, there.
|