I would not be so interested in the topic if I did not witness a UFO myself. Considering where this was and how long ago, being familiar (now) with most of technology available (then), since it has been declassified in all the decades that have passed since, I can say with certainty that the "vehicle" that I saw was not one of our creation. It materialized above me with all the shiny, polished, almost mirror like finish of some incredible alloy. It hovered perfectly flat in the horizontal plane above me, with its liquid like metal skin, shimmering in the summer sun and slowly rotating while causing some unexplainable tingling sensations on my head and neck. I looked at it for what seemed like 30-40 seconds without taking my eyes off of it. It then slowly morphed back into the background sky but before it completely dissolved, it took off at an incredible rate of speed and disappeared.
This was slightly after lunch and I was playing in the yard alone. My grandmother came out to call me in for dinner but I just came out to play after lunch... That part I will never understand. It thoroughly confused me.
Nor will I ever understand the flashbacks much later in life of an "endless room" with no visible boundaries and someone standing over me laying on a metal table feeling nearly frozen from the cold in the room. I don't know where this memory came from but I remember it vividly. Who knows... Abducted? Maybe... I doubt I'll ever know for sure. It could have been a dream about the room that later turned into a perceived memory but the UFO part I do remember vividly and that was definitely a real experience when I was 7 or 8 years old at most. I had no idea what a UFO even was, to me, it was just a fantastic sky vehicle of some sort that I was able to observe in great detail.
Well, it doesn't matter, all that aside, the statistical odds of us being all alone in this vast universe that is made up of similar ingredients, distributed throughout and nothing really unique (religious faith aside), well, it is silly IMHO opinion to even think we are somehow so special as to have this universe all to ourselves. Hundreds of billions of galaxies, each with hundreds of billions of stars and planets in the numbers that would be simply incomprehensible. Not to mention the gaps of technological evolution that could have taken place between the various forms of intelligent life out there over the Billions of years. The Homo Sapien has been around all but some 200,000 years and already we think we are the Supreme Beings and that no one else can possibly be out there... Ha!