@TurboLung,
Well, I think it's important to remember that "Value" is something gained through, at least in economics, utility and rarity. I don't think there's any natural definition of value or beauty. These things aren't appreciated by cosmic space dust.
But they are appreciated by humans. We as humans, in fact, value ourselves pretty highly.
I think, however, your idea of humans as worthless garbage might stem from looking at humankind through the lens of that very cosmic space dust I was just talking about. From the viewpoint of the universe, humans are worthless simply because space-dust doesn't have a need for value. It doesn't have a need for us.
And if you subscribe to that viewpoint, then it makes sense that we would be worthless. But I prefer to view things from my own innately human perspective. I find value in doing so, regardless of the lack of value in it all from the viewpoint of Cosmic Space dust.