just curious. can be from a religous or a scientific perspective or even an ethica one. you can interpret the question as when Earth ends or when the human race goes extinct... whichever.
i think that the world as we know it will end in the next 500 years. i think the human race will survive but things will be so radically different. i think earth will probably be a wasteland and we will have colonized the moon and mars and those will be the centers of the population. i guess we will probably be our own undoing as something massively important will be invented or discovered that will lead us further from home and earth will be discarded and left to the environmentalists to sentimental to leave. i dont think we'll ever leave the solar system nor will we find intelligent life elsewhere. i unno ill think more on it as this could get long.