good number crunching snarks.
But you stopped half-way.
Take your extremely low ratio and extend it across the universe and you end up with lots and lots of places that have life.
But since we are never going to be able to travel to the stars, it is meaningless because we will never ever meet any of that other life.
I find myself in the camp that holds that even low-level, microbial life is pretty rare, while high-level, intelligent life is incredibly rare (I think it's quite possible that Earth holds the only instances in the entire Milky Way galaxy). But I wouldn't care to dispute heatedly with anybody who thinks otherwise, because we're still a ways from having enough information to draw sound conclusions on the question.
On the star travel question, I suspect that within the next few hundred years—provided something really awful doesn't happen—we're going to launch a probe towards Proxima Centauri. It'll be a long-term project, but perhaps we'll find some things of interest. Of course, that's assuming that we don't just innundate our local neighborhood with von Neumann probes, which I suppose could happen.