Assume that there will be a mass extinction event somewhere in the next 1000 years - meteor, WW3, whatever. If you'd then play a timelapse of earth, you'd see it on fire, cooling down, oceans forming, greenery forming, continental drift, north/south poles icing over and clearing, snowball (?) earth a few times, then in a short blip the rise and fall of humanity, then uh. more of the same. Geological (and universal) time scales are mind blowing.