NOPE. WE ARE NOT ALONE!

Government To Release Britain’s UFO ‘X-Files’ – 
which could prove aliens exist.

Well, given the mind numbing number of star systems and galaxies in the known universe, it would be totally arrogant and narcissism extremeo to think that we humans are alone! Whither they've been here is still open to conjecture; but who'd want to associate with a planet full of loonies?