OK, I'll state my position on the species, since you asked, albeit not very politely.
Currently, we know of exactly one place that houses sentient life. That's the dirtball we're all on right now. While the odds are there's another dirtball similar to this one that has some sort of sentient life, we haven't found it yet (weather we want to or not is a question that is outside this context). It's not like we haven't been trying either.
With this in mind, I would consider it a travesty if we got wiped out by a handful of idiots with a gene sequencer, a handful of idiots with a centrifuge, or a cosmic event like a gigantic rock smacking our beloved dirtball. We're smarter than that. I don't know that we're the end-all be-all of knowledge with certainty, but we're the only ones we know of for now. Even though we are evolving and won't the be same thing in $BIGNUM years (perhaps not even recognizable to a member of the species today), I still think that we, as a species, have risen to the point to where we can ensure that something more than a fossil record is left, if we do the work. I believe we have the intelligence, we just need to keep grinding away until we get the full body (or at least a large enough body) of knowledge to get it done. Some people state that we already have this, we just need an investment.
As for my 'concern about the species': Being a member of it, I have a vested interest in it. I would think this would be a universal truth, but I could be wrong. The divisions we create among ourselves are merely theater when considered in the larger context, despite the fact that they often drive us to do horrific things to each other.
Space nutter indeed... There's no need to sink to insults. Of course, this is the internet...
