I like to think that the answer to this question heavily relies on our individual beliefs, be it religion, science or whatever notion you have as to how the world started out in the first place.
From the perspective of religion, Isam and Christianity to be precise, the world will surely come to an end. Though their beliefs on how the world will end differs, they both talk about judgment day - which is life after the end of the world.
Science on the other hand from all it's theories also suggest that there will be an end of the world someday. Science has it that the universe was created after the big bang explosion some billions of years ago. It is believed that some of the oldest galaxies grew larger with time and simply evaporated out of existence. Milky way which contains our solar system and houses our known world happens to be one of the youngest galaxies known for now. So don't worry, we won't be evaporation anytime soon.
Some planets on the other hand were believe to have had some type of earth like environmemt untill rogue space elements bombarded them like the moon, thereby making them inhabitable. And there's also the discovery black holes, the space version of tornadoes, which is believed capable of swallowing an entire system or effecting the change of planetary movements that can lead to collision of one planet with another. Anyways you look at it, the world is bound to come to an end someday.
Let's even assume there was no God and also dismiss science, human hostility alone against each other is another reason why the world might come to an end. With the increasing wars going on and the development of more dangerous weapons like the nuclear and hydrogen bombs, it's only a matter of time before one psycho presses the button.