I used to believe in UFOs, but then I lost interest. Then i became fascinated in the human need to believe in sky creatures. We cannot see but a sliver of the spectrum of light; hear but a sliver of sound through an improbable mechanical set of bones, a flap of skin and some tiny hairs; and feel only the grossest of textures. We move dully through a vibrant world of fantastic phantasmagoria, with only the cliff notes of reality. And what we do perceive is adulterated and fudged by our human wiring. We are prone to illusions, we ignore, forget, and just don't see what we aren't expecting. We see human forms and faces in trees, toast, and shrouds. Our genes and biology play tricks on us. We see our reflection in the sea and we call it god. We see a flash in the sky and we call it a UFO, and we imagine it is a ship full of angels, or devils...but always a reflection of something we already know. Its a false mystery, a bad magic trick we play on ourselves as we wile away our lives, chained to the wall in Platos cave, interpreting shadows of truths.
But here's the weird part.
The objects that cast the shadows into our sensate world, the true objects beyond our ken, are the well and truly alien beings we wish for, pray to... We see their shadow and we call it a UFO. That's the best our monkey minds can conjure when confronted with the echo of a transcendental song. It may stir the heart and enflame the mind, but it is not the thing in itself. Which is why, after millennia of sitings, there is no empirical data.