Just before my mind boggled itself into incoherence, something particularly apt sprang to mind:
"So remember, when you're feeling very small and insecure,
How amazingly unlikely is your birth;
And pray that there's intelligent life somewhere out in space,
'Cause there's bugger all down here on Earth!"
("The Galaxy Song" by Eric Idle - full lyrics at http://www.serve.com/bonzai/monty/songs/TheGalaxySong)
There's little else I can add.