In my opinion, there's life everywhere. we just are WAY too far away to explore/study/discover it. And when I say life, I aint talking little green men or klingons. Extremophile bacteria is almost certainly in other places with-in this galaxy (perhaps even this solar system).
There are 100 billion stars in our galaxy alone, and then there are 100 billion galaxies in the known universe. Each one of those stars has stuff orbiting around it. Bacteria? absolutely. Fully evolved intelligent life? perhaps. Will it be anything like humans? I doubt it.
Finding life somewhere else wouldn't surprise me all that much. Discovering what happened before the big bang, now that's another story.