[Suzerain of Sheol]

Ah, yes, ufologists. That's a whole 'nother issue. :p

Seriously, though, I believe 100% that extra-terrestrial life exists. I don't believe we'll ever meet another star-faring species, or that they've ever been to this planet, even if such a species exists, as the distances are simply far too vast and crossing them would require either thousands of (human) lifetimes, if not many times that, or completely rewriting the laws of physics, and... any race capable of doing that, you might as well name them God.