This story managed to be sad and funny at the same time. Sad because, well, we're all extinct (and fairly soon, too), and because this is an exercise in futility, and funny, because, well, it's funny.
And I'm going to drop my 2 cents' worth in and agree with Alasdair - DS9, the unwanted step-child of the Star Trek franchise, is *by far* the most satisfying complicated of the series. (serieses?)