No doubt, the world would end (this age, a new ice age would destroy life) if the sun burns out, but there are too many other things going on to think that this world will suffer a natural death like that (that's too simple a scenario). It's not just Iran and all the countries with nuclear capability, not just war and terrorism, but global warming threatens a very large portion of the world's land mass. The melting of the Himalayan glaciers threatens Asia and the Alpine glaciers threatens Europe. Africa is supposed to be at risk by 2020. As much as 3 billion people will be displaced when so much land floods. How will the "powers that be" care for 3 billion people that have no place to go and all the farms disappear? END TIMES???
This world is not peaceful enough to wait for the sun to burn out.
Prophecy is very symbolic because God is talking about the spiritual aspects and events that will happen, but the end of the world will not be caused by spiritual events, the end of the world will be caused by humanity's self-destruction THAT ALSO CAUSES those spiritual events. God knew when humanity would finally destroy itself. God knew about the I.D. and the "beast"'s many activities (mechanized human beings). When the creation that was made in God's image (human beings) is modified by invading machinery (diamondoid robot, nanotech), that creation becomes a beast (euphemistally, not spiritually, YET). "Beast" has a literal meaning (non-human, modified human being, artificial human being). Prophecy is "nature taking it's course"...mankind will destroy itself.
1 John 2:18 "...so now many antichrists HAVE come,...". There will be an international leader (politician) that will come IN THE SPIRIT of antichrist. He will be named after the spirit of 666 and will perform "miracles" that APPEAR to be scripturally representative of God, but without the support and acceptance of the "sixth day creation", there would be nothing to have power over. Right now the "many antichrists" have many oppressive INTERPRETATIONS of scripture that oppress the people because they cause us to inflict shame and guilt upon each other. In other words, the 66 books of the bible are being interpreted by the 6th day creation in a way that opresses the creation made in God's image.
God is only going to INTERVENE and oversee the end of the world, He is not CAUSING it as we think. He is going to keep us from literally blowing up the world (there will be a new heaven and a new earth). MANKIND will destroy itself, God foretold it, and He will be there when it happens. That's the trouble we have understanding prophecy, we think we have nothing to do with our own destruction and we blame it all on God. The same misunderstanding happens in our reading of scripture, we blame evil on the devil or we blame it on someone else, but we don't accept responsibility for our part in allowing evil to happen. (WE cause our fate)