The true meaning of UFO is something that is unidentified, flying, and an object.
UFO does not mean you are dealing with Aliens. UFO does not refer to anything but the fact you cannot with your skills, instruments identify what you are viewing.
The fact people want to believe lights in the sky are Aliens, does not make it so. The conjecture and repeated '2nd hand' stories of these situations are always based on the viewer seeing something they themselves cannot identify and drawing a conclusion that it must be extra terrestrial.
What we skeptics love is the enthusiasm at which people will suspend logic/reason in order to claim something they at best cannot even give a clear picture of.
The vast majority of scientists, skeptics and normal ever day people all want the same thing, contact with aliens. We spend hundreds of millions of dollars on SETI, and we have millions of amateur astronomers of varying kinds all pointing at the sky looking for anything remotely resembling aliens.
We have NASA which spends BILLIONS looking for the faintest hint of life on mars and other planets, knowing full well what the discovery of life even at its most basic levels means to science and our own planet.
I am very confident there is life even in our solar system, basic yes, but its likely there... I am however tired of UFO sightings on earth, because of the lack of any kind of evidence.. The entire UFO industry is full of people making profit on everyones desire to believe.
Do people see things that are unexplainable to us visually, sure... Do we see things that others could explain but due to our own education we are baffled by..... sure..
The fact is, we have a vast number of people who are only going to rely on evidence to prove we are not alone, the vast majority of them see nothing to indicate we are being visited.
The simplest argument I have for the believers is this, IF we are being visited by intelligent life, why travel all this way to be sneaky and not just say hi.
There is life on other planets, we just are not being visited by them
