If you consider Theory of Probability and take known amount of universes and take one our and universe you will see that chances that in unknown regions of space there will be life ..
Some scientist has already made a equation ... so yea .. there is life.
The question is who discovers who first ? ... the other question is .. when will we be discovered and will our civilization survives to that moment.
Could i ask additional question? - What would you do if you see Alien ?
I would say Peace :)
I dunno .. lots of things i guess .. at first i would try to contact them .. then i would try get in to their ship and fly the fuck away form earth .. yeah :)
i believe too)) there are a lot of unknown things...and this things amoung us....humans are not so ideal as majority want to think.....also, i think those "ALIENS" not so far from our homes.......... maybe they are behind you)
Once I saw Mickey Mouse flying quickly up in the sky.
Technically it was not a UFO, since I could identify this flying object. It was a helium balloon in the shape of Mickey Mouse, which escaped from a child.
I see something strange in the sky rather often. In most cases I can immediately or after some consideration to identify the natural origin of the object or phenomenon (terrestrial extraterrestrial, but known).
However, on several occasions I saw flying objects whose origin I could not identify with any degree of certainty. I could only hypothesize about their origin, but had no chances to verify my hypotheses. Though, never had I assumed that those were flying vehicles of aliens.
I do not need to believe in UFOs. I've seen a few, that is, a few flying objects, which I could not identify. As for ET intelligence, I've seen none and have never seen any scientifically feasible reports of contacts with them.