The end of humanity would not be the end of life, right now. However it's only a matter of time until something large collides with Earth and destroys it all.

The end of humanity would not be the end of life, right now. However it's only a matter of time until something large collides with Earth and destroys it all. Like it or not humans are the best chance this planet has to continue life on after a cataclysmic event by hopefully colonizing another planet.