At the risk of being thought a "Kook", or stupid...I'll relate a personal story of mine for anyone interested to ponder over.
All right, so I'll share my story as well.
I was about 6 at the time, it was about 14 years ago. We had a family reunion on our garden, with a campfire, and it went to a late night. The night was clear, full of stars, no moon, weather was warm, really a nice time. We kids were running around, having fun, playing with burning wooden sticks, and so on. Then I went behind a tall hedge surrounding our garden, and I looked at the sky on southwest.
There was, in great height, about a kilometer, a few kilometers away, a strange, probably large bunch of bright orange lights, like many balls joined together, and one of them was shining green. This green color by time disappeared in orange lights. I watched it with my younger brother for quite long, several minutes at least, and eventually I went away to tell parents about it, who were still at a fire. If I remember, my mother went behind a hedge fence to have a look, but I'm not sure if she already saw anything.
As for a nature of extraterrestrials, I'm completely sure they exists. My father knows personally a man, who decoded the famous WOW signal. He did it in completely logical way, combining an approach of mathemathics, geometry, and graphics. His amazing discovery was, of course, fiercely rejected, ridiculed and ignored by all authorities, academics and scientists he ever managed to contact.
Somehow, no-one among the authorities wants to have anything in common with extraterrestrials. Not seriously.