Bah, such fantasies are merely man's way of coming to terms with the TRUE end of the world. The world will not be destroyed by hellfire, or nuclear war or natural disasters, but by the wrath of The Master of R'lyeh.
Aeons ago, when the world was young and desolate, the Elder Things, creatures far more intelligent or evolved than anything we know today, came down from the stars to make Earth their home. They planted the seeds of life in our primitive oceans to produce food and built collosal cities in what is now Antarctica. They reigned as gods among our primitive ancestors.
And yet even the Elder Things could not face the horrors that were to come. Something else came down to Earth, something more horrible than even even the grotesque Elder Things.
Accompanied by his servants, the Starspawn, the Master of R'lyeh flew down onto the Earth to claim it as his home. He built his fabbled city of R'lyeh and brought horror onto the inhabitants of Primordeal Earth. He was no alien, he was a god.
The Elder Things wared with the Sleeping One, hoping to wrentch the Northern part of the planet from His unholy grasp. But even the advanced technology possessed by the Elder Things was not enough to fell the Master. Hope seemed lost for the inhabitants of Earth.
And then, a curious thing happened, the city of R'lyeh mysteriously sank beneath the ocean taking the Master and his Starspawn with it. The planet was at peace once again, the Master had been defeated. Or had he?
Though the Elder Things have long since left our world, killed by technological stagnation; a changing climate and the rebellion of their servants, The Sleeping One still lingers "That is not dead which can eternal lie, And with strange æons, even death may die". The Master of R'lyeh still lives, sleeping deep beneath the sea in his Great City. And he will soon awake.
"When the stars are right, R'lyeh will rise from the sea, never to sink again, and Cthulhu will awaken and revel across the world "ravening for delight". Nothing can save you from the fury of Almighty Cthulhu! Humans are but ants which have infested The Sleeping One's home and he means to exterminate them one by one. Cthulhu would think no more of wiping us out than we would of killing a dust mite. None can stand against Him.
And there still remain those who read my warnings and laugh. You think it possible to use technology, space travel and the like, to escape Cthulhu's wrath. But you could not be more wrong. Even if we were to escape from the clutches of Cthulhu, even if we were able to leave our world behind as the Elder Things did oh so many aeons ago, we would not be safe. For Cthulhu is not the only God to exist in this universe. There are dozens, if not hundreds, of other gods living throughout the universe, many of whom would make even Cthulhu himself whimper. And none are as forgiving as The Master.
So remove all of these thoughts of a messiah saviour and resolve any disputes you still have for very soon, when the stars are right, He will awaken!