What humans do is pretty insignificant in galactic terms. True, we might make major changes to one, or even a few planets, but in the big picture, Human Consciousness (why caps?) is overrated. It is a tiny artifact of evolution on a tiny planet in a tiny solar system. Trying to make ourselves more important than we really are is a very strong aspect of this consciousness. It explains why we create religions, but it is not really that important. If it gives you pleasure to ponder it, then by all means knock yourself out. Beware of extrapolating too much though.
Carl Sagan - Pale Blue Dot
http://www.youtube.com/watch?v=p86BPM1GV8M
In this Carl is most definitely making similar commentary as you regarding position place and importance, however he is not at all suggesting it is not important, but what he is suggesting is that 'we' redefine our own understanding to better adjust our own behavior toward one another which
underscores our responsibility to deal more kindly with one another, and to preserve and cherish our home - the only home we have ever known.
Now that might appear to be the language of wooism, but it is not.
Another thing worth considering is that argument made against those who believe in 'afterlife' that they do so because they cannot stand the thought of not existing, and possibly this belief gives reason to their otherwise pointless existence.
Could it be then, that using a similar argument, those who think that the history and happening on this 'pale blue dot' of a planet is of no importance adopt whop-de-doism as a way of saying 'if I am not important, then nothing else is either' ?
I have found that the best path to walk then, is between the two extremes. It is the most logical and requires no impulse from belief that I will somehow live forever, or that nothing is really important because I am not important.
What helps it along though is a healthy appreciation and sense of wonder at what has, is and will occur on this pale blue dot of a planet and that it is not about me, or you specifically but about all of us, or at least all of us who know this to be so and work in whatever way we can to help the whole - and my dying and being no more a part of that process or any other process does not matter to me. NOW I have the opportunity to wonder at being part of it, of which my significance in it is tiny but still I am experiencing it and loving it and appreciating it and WANTING it to continue of itself, even be that I will not be going along for the ride - to where it is heading.