I think its very hard to believe that out of the trillions of planets that there surely are in the universe that none of them would harbor life of some kind and out of those none harbored intelligent life like on earth. Its pretty crazy to think about isnt it? But the sad fact is that it is very unlikely that these intelligent species will ever be able to communicate or even hear from one another due to the vastness of space. All we can do is have faith that there are other civilizations out there and wonder how advanced they just might be.
If it was just us doesnt that seem too weird to believe? That in all the cosmos, only one planet evolved life?
Think about it...