Read the stuff from the fall of the Western Empire, the Viking raids, or (if you really don't want to sleep) the rise of Islam and the black death.
When I was researching into the fall of the Byzantines, I almost quit because I really didn't want to see the light of Christ snuffed out like that in the East.
But, after all that, the Cross which was trampled on by the barbarians was worn by their children. Much the same thing is happening in China, Africa and even the Middle East.
The Cross has triumphed. Jesus died for my sins, and I will cling to Him till the end. The West may fall, and to be honest we deserve to. But never forget, our ancestors were the monstrous men the early Christians feared. The Roman people are gone, and the germanic tribes became the Europeans of today. Now, after they have spurned God and chased after hell, the mantle will pass to someone else. Will it be the Asians? The Africans? The Middle East again? Or will a flicker of the West remain in South America to rebuild the world after the fall of the US and Europe?
This may be the End, but honestly I am not sure. I am more sure it is the end of the US.