When you get out to a desert and look up at how much there is out there you start to realise the chances of no life outside earth are very unlikely.
If the Universe is infinite and life happened here, its only statistically logical that life happens elsewhere.
As far as meeting or communicating that life goes, the statistics aren't so favourable.
The whole area 54 / Roswell thing is crazy though. Just the energy and time involved in interstellar travel is nuts, surely if you make the trip you don't just leave without doing anything.
Its like riding a pushbike to Darwin, waving to a guy outside the pub , then going home.