[Exnihilo]

No offense but If you had lived hundreds of years ago, I am confident you would have been one of the people that believed the Earth was flat because there was nothing known about the size or shape of the Earth, therefore, it must be flat

No offense taken, because you're wrong. I would have indeed said there was at that time no evidence (known) that the Earth were round, however I would not have made the conclusion that therefore it must not be round. I would have withheld my conclusion until some empirical evidence was had. Please note I have not made any assertions about life in our universe, I simply see no reason to believe that life exists anywhere but on Earth. Pointing to the vastness of the universe says nothing whatsoever about the probability of life existing elsewhere.

[Joe Hadenuf]

I simply see no reason to believe that life exists anywhere but on Earth.

And Again, if you see no reason, thats fine, and there may not be life else where. I am confident however, that there is, and there is only one reason I feel this way, and that is the shear immense size of the Universe.