For me the stories of Ragnarok are too intertwined into the entire body of the Eddas to be total fabrication. From the time the Gods kill Ymir to make the sky, the oceans, and the earth, to the binding of Fenrir and Loki, to the death of Balder, the story simply fits together too well to be total fiction. Does that mean that the Eddas aren' t tainted by Christianity, and / or Snorri Sturlusson's biased perspective ? Of course not ! Anyone who writes a story of an actual event will put their own spin, or interpretation on it. Read five books on the battle of Waterloo, and you will get 3 or 4 different interpretations on the main theme. Very few writers have the ability to be totally objective in their thoughts and writings. That is just a fact that cannot be changed.
Some in our religion see Ragnarok a representing the final battle between Christianity, and the Pagans. The great spiritual war between the " White Christ " , and the " Red Thor " if you will allow me that analogy. But the forces of Chaos that do battle with our Gods at Ragnarok bare little or no resemblance to their religion, but do reflect images written about in other Edda and Saga stories. Dragons, wolves, great ships, Jotuns etc.... are written about often in the Eddas and sagas, and I have chronicled a few of them here on my site. Some have even tried to equate Surtr, his flaming sword, and Muspelheim, with the devil Lucifer from Christianity, but I reject that idea. Surtr is the guardian of Muspelheim, who like most of the Jotuns has waited a millenium to get revenge on the Asgardians. Ragnarok is merely the point in time when that anger is released.
If there were only the stories written about Ragnarok that would be one thing, and the tales from the Eddas and the Sagas would be easier to dismiss. Carved in deep in stone rune monuments throughout Scandinavia are scenes depicting scenes representing Ragnarok, as well as other stories from the Eddas and Sagas. Our ancestors would not have taken the time and the effort to carve these monuments to their religion in hard stone if they did not have some fairly strong belief in the story of Ragnarok. There are also the beliefs that go along with Ragnarok, such as the cutting of the nails of a man who dies because dead men' s nails become part of the ship known as Naglfar that will transport the forces of Chaos to the field where the great battle takes place. These " wives tales " always have a grain of truth to them if you look deep enough !
I believe that Ragnarok will take place at some point in human history. It may be 20, 000 years from now or tommorrow . Only the Norns, a few Gods and a few Seeresses seem to know exactly when it will take place . Whether you believe in Ragnarok as being an actual event that will take place is up to your personal beliefs. Either way it is a wonderful story richly told with great meaning, and in some cases deeper feelings for those who choose to ignore the story as fiction. Only time will judge what is the truth, and what is false, and I doubt that any of us will be around to witness it.
Go with Odin's wisdom, Freyja' s love, and Thor's protection !