When you consider all the animals that inhabit this planet, past and present, we are the only ones that contemplate whether life exist on other planets. This alone should suggest that we are unique to this planet-a being that has a moral code that tells us murder or stealing is wrong. And as such we differ from other animals by thinking, creating, reasoning and contemplating. The fact that we are discussing the possibility of life on other planets is evidence that we differ from other primates.
You suggested that, given the statistical odds, there must be life on other planets. I would offer that there is evidence to suggest a spiritual realm exists here and now, in perhaps a parallel universe. Yet, while aliens seem a distinct possibility, many simply fail to believe that a spiritual realm could possibly exist where “aliens” could exist. Science fiction writers talk about travel through worm holes or the existence of parallel universes. There is far more solid evidence to support such a possibility with the occasional photographed of “ghosts” and other supernatural happenings recorded in testimonies of various people. All one has to do is Goggle for various pictures of ghosts or other unexplained phenomenon. Yet, despite the evidence, people remain skeptical. It is much easier to believe statistical probabilities then things we cannot explain.
So, if we are talking about a spiritual realm and alien beings, I would suggest that it isn’t all that crazy to believe in the existence of God. And if God exists then one would have to assume that He exists to make Himself known to us.
I suppose the concept of spirituality comes in to play, given this discussion about the probabilities of intelligent alien life, but it wasn't my intention to drive the conversation in that direction.
The short answer is, it's my belief that a living, sentient spirit, animates every intelligent life form in the universe.