It is absolutely inconceivable to me that there isn't LOTS of life out there, at least in the form of bacteria. Now, as for intelligent life, that's going to have to be a lot more rare to find than bacteria. Just looking at the Earth and how much time the biosphere was 'dumb and non-technological' I would be willing to guess that for every 1000 planets with bacteria, we would find 100 with multicellular life, and only 1 with anything like intelligent life. But then again, we just do not know!! But the Milky Way and the Universe are BIG, and I have little doubt that there are lots of intelligent, and even space-faring, life forms out there.