we will die much sooner than that.
pollution, overpopulation, nuculear wars, radiation build up in the atmosphere, discovered acids, possible zombie outbreak, russian and north korean world domination, usa world domination, anything world domination related will destroy the world. Planets moving will cause the earth's downfall as well possibly because long before the sun goes out it could either freeze or burn the world on how its slowly moving along the universe, the moon will leave us too so we will be flooded by the time that even happens.
it's likely the world dies in 2050 - 3400