As far as we know life is only present on Earth, we presuppose that in the vastness of Cosmos there are other instances of it or that it can re-emerge from almost zero, but the reality is that we simply don't know. So maybe there is a possibility that wiping out all the life on Earth also wipes it from the entire Cosmos, forever.

> Nature won't know or care if humanity erases itself.

You got downvoted for paraphrasing the poem "There Will Come Soft Rains", from which Bradbury took the title of his story.

I supposed that's to be expected online. Small consolation, but at least some of us understood you :)

  And not one will know of the war, not one
  Will care at last when it is done.

  Not one would mind, neither bird nor tree
  If mankind perished utterly;

  And Spring herself, when she woke at dawn,
  Would scarcely know that we were gone.