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I have never seen a Unidentified flying object  . so  what does  a UFO mean only that something appeared and someone was UNABLE to CLEARLY  identify what they may have observed either due to visibility  distance  TIME comparison  knowledge ability to study or evaluate something .
 why that  cause some people to  proclaim  imagined  scenarios or causation possible attest to ones imagination and susceptibility  to the imagined  and fears and a decline in skepticism and desire  for  critical evaluations  and sometimes say  in honesty  I don't know exactly what that was  
 do i really need an answer   was it detrimental to my well being  Funny how No UFO are ever credited with a airplane ever crashing or a human being was ever killed .why is that do you think and none of the abduction ever  resulted in  loss of limb or life  occasionally claims of marks or bruised   but they are not  unusual to humans  they can occur by many methods
G0rdi
I see UFOs all the time. So do many people.  A UFO is simply something in the sky that the observer cannot identify - and as few people are experts on everything that can be seen by looking up, it should be no surprise that plenty of UFOs are observed on a daily basis.
What I and no-one else has ever seen is a spaceship that has travelled billions of miles across interstellar space just to play hide-and-seek with us.
And anyone who sees something in the sky they can't identify and on that basis decides they have seen an alien spaceship is a total moron.
John
There was one here (San Francisco) a couple of weeks ago - the missile that was launched from the submarine but I didn't see it. It was a UFO until the Navy explained what it was. Now, purported space vehicles carrying little green men I think has been relegated to crackpots and youngsters for quite some years now.
daniel g
Yes, several in fact, countless considering 60 years.
campbelp2002
I saw one about a year ago. I asked a question about it here too.