dog you cant go around (well actually you can cause this IS the interweb) saying something is fact, and then saying the proof is that i cant disprove it. thats not how facts work.
It may be a theory but not fact.
also, the moon and mars both have water on them. so 3 celestial bodies in our solar system have water, and there are billions of solar systems. i think a few celestial bodies might have water.
and could you please reference any evidence that you have that shows that there is no chance for life anywhere in the universe, other than earth...please.
heres a planet that we just found that may be supportive to life.
http://www.space.com/3728-major-discovery-planet-harbor-water-life.html