Intelligent Life in the Universe

The question of whether or not there is intelligent life elsewhere in the universe is one that preoccupies the human mind. Rightly so, I think. The vast expanse of the universe almost compels the consideration of the possibility. The idea that in all of that uncharted room we, human beings, alone have the capacity for memory, reasoning, history, art, and relationships (to name but a few) is not only disquieting; it is borderline repulsive. It seems unimaginable that beings so prone to destruction, planetary mutilation, and behaviors more appropriate to an unmonitored playground than a civilization stand triumphant at the very pinnacle of the evolutionary mountain. So we speculate on the possibility of life elsewhere. Some of these visions are distopian: H.G. Wells imagined extra-terrestrial life as genocidal. Some of these visions are more hopeful, Star Trek and Star Wars. However, the possibility of such intelligent life in the universe is a topic of considerable debate.
The most commonly referenced means of determining the possibility of intelligent life in the universe is the Drake Equation:

N = R* fp ne fl fi fc L

For an explanation of the equation see setileague. Drake estimates that there are 10,000 communicative civilizations in the Milky Way Galaxy. Very exciting stuff, until you realize that basically every number Drake, or anyone else using the formula, is employing is, in the best case scenario, a best guess. 10,000 is not as compelling when it's a guess. Essentially, it places you back to square one in terms of the possibility.
So, let us dismiss hard math for the time being and think in terms of reason. The universe is, literally, unimaginably vast. We only just begun to breach the outer reaches of our own solar system in the last few decades. That's nothing in terms of the existence of the universe. We are a very primitive species when you get right down to brass tacks. Our technology is supremely limited. The most brilliant physicians in the world don't fully or in many cases partially understand what happens in our bodies. Think about this for a moment. We live in our bodies every day. It is probably the most examined, poked, tested, prodded and experimented on object in the world and we don't even really understand it yet. We cannot manage our toxic output, our waste output, or our population. We don't have a decent theory for the origin of life on earth without descent into wild speculation or religion, neither of which is a good place to begin when discussing the possibility of life elsewhere in the universe. In point of fact, about the only thing at which human beings excel at, as a group, is killing other human beings. This is the height, the great vantage point, from which experts look out into the universe and declare that it's unlikely that there is intelligent life anywhere else. There is a term to describe such a statement from such a group: Hubris.
It is an arrogance of the most unsavory sort that leads people to declare themselves the only intelligent life in the universe. It is the statement of children who believe themselves to be more special than they truly are. It is a reflection of western culture's, in particular, belief in its own superiority. We are all subject to our biases, be you as scientist or a blogger, but when you look up at the sky at night it should be clear that the limits our self-knowledge and knowledge of the universe should preclude a belief that we are alone.