A UFO is an Unidentified Flying Object, which of course exists. I think what you mean is "do you believe in aliens?". And to answer that question, in my opinion the probability of life elsewhere in the universe is 100%.

As we all know UFO means unidentified flying object, so yes I do believe in UFO's o.O But If you are asking if we believe that there is another life form exists in the universe except than the Earth, yes I do believe in coincidences and the probability of an alien form's existence seems more possible than the miracles of the religions.

No

I would say "no" I don't believe in such a thing as UFO's, however, one night about 20 years ago, as I drove to my house at night, I saw a big bright round object that looked like the full moon, but it was slowly moving behind the trees, and I thought it was going to hit the mountain behind our house. My 15 years old son was with me. It glided on past the mountain. I even called the police to see if anyone else reported this floating object. They had not received any other calls. It was not a baloon, and it was too fast and low to be the moon. I don't know what it was!

Hi! Yes i do believe and i'll tell u why. I've seen a lot of UFOs in the sky since i was a child and it's ridiculous to think that we are the only civilization in this Infinite universe. There must be something or someone out there that we dont know yet. Dont u think so? ;-)