[Azazel.]

Every creature on the planet has it's place in the ecosystem.

I fully support the presurvation of endangered animals and endangered enviroments. Creatures and enviroments that are endangered because of human development is a huge problem and should be addressed with the upmost attention.

Now , that being said...

We mass produce a variety of animals for the purpose of food and resorces. I see no real difference between that and producing animals for research.
Animals are not alone , we also use a variety of Human test subjects for products , and research.

So , in my view we must preserve as much of nature as possible. We have that responsibillity. But we must also push forward to create a better human race.