I'm somewhat sceptical about the whole UFO phenomenon, but I'm more inclinded to believe in things like UFO's and Ghosts than I am to not believe in them. I do believe in ghosts and those sorts of things, I'm convinced a few of the houses I've lived in have been haunted.
Too many people have claimed to see and experinece too many things for there not to be some truth to it, and there's way more harm that comes from admitting one has expeienced paranormal incidents than there is benefit, so if it didn't happen, why would most of the people affect claim it did. Though some of them are obviously just fucking crazy.
I don't know if anyone remembers seeing the footage those 5 lights above Phoenix (I think it was Phoenix) that all moved in unison, but tons of people video-taped it and it was all over CNN etc. but the guy who was the mayor of Phoenix at the time has come out and said he believes it was a UFO.