Some will have different beliefs about this world, depending on the approach we are using, some believed that the world will certainly ends one day, whereas others believed that this life is a continuous process and the more people are dying, new generation are being given birth to, such makes it a continuous process for the world to always be habitable for living circles, nothing is going to end the world for now, except nature did and we should not also contribute on anything of such to end it by our human activities, example is using nuclear weapons.