Why there is so much hue and cry over extinction of any species of life?

I think part of the issue is what caused the extinction. If man's activities have caused the conditions that set up a species to be endangered, we feel a responsibility to try and set it right. That's my best guess...

There is such a thing as the circle of life. Once there are species falling out of existence we are closer to falling out of existence. Each species has a reason to be and when they start breaking down then our very existence begins to break down. The circle of life is very important to our continuing existence.

I'm not going to read any of the other responses before posting this, so I may get in trouble... but I agree with what you're saying for the most part. If people believe in evolution, then they have to believe that some species outlive their usefulness in the greater picture of life. Allowing them to die out is the only sensible thing to do. To try to manipulate the ecosystem of the world is egotistic and not very smart. If WE are not the main reason for this system (as some believe humans only upset things) then why do we keep trying to manipulate it? If we're so selfish and dense that we can't see the damage we do when we, for instance, toss out a plastic bag, then why are we not selfish and dense when we try to make nature do what WE think is right and not what it thinks is right?

I have thought about this also, I think it that humans hate change, they feel most secure when things stay the same and so they fight to keep them all the same.

Most of the extinction species are caused by human, that is why human are doing something to stop other to do something that will reduce the number of species or certain species. There are also animals that extinct by nature but it is quite rare unless the environment changed, now come to the question, why environment change? That is what caused by human, so human have the responsibility to preserve and prevent them from further extinction.

There is very little part to every extinction of species in this world from human beings. Its nature and we need to try to balance them as much as we want.