Taz:
Why should we care for all the species that are dying out there even though we've never heard of most of them? Because once they're gone they're gone.
I agree.
Losing what you've got before you even know what you have... human experience has shown that, time and again, to be a bad way to do things.
In the last generation, really, our own species has begun in earnest to understand cladistics. We are beginning to put together life's family tree. We are coming to appreciate the odds any species has to beat, through eons of evolution, just to be here. You want to know more about that. How did it get here? How does it relate to the other living things on this planet? What can it teach us?
To lose a unique life form just to meet some comparatively short-term interest (harvesting a common variety of fish, finding feathers for women's hats) is bad value in any trade. It's short sighted. Other options to meet the same needs can be found.
Archer
All species are transitional.