What if we are the first/only intelligent beings in the universe and it is upon us to spread to other galaxies and stars? Probabilistically unlikely for us to be the only ones, but just a thought.
How do you even measure that? If the number of coincidences required for life to emerge is large enough, the probability of observing life on a planet could very well be far bellow 1 over the number of planets in the universe.
That would make us probably alone :(