That's...horrible.

Apart from my personal love of the Earth, I don't think any decrease in biological diversity would serve any good; and the specie in self, bless my vanity, is rather spiritually important as a survivor since the Dinosaur times.

Also, biologists ("evolutionists" for creationists around here) could increase much knowledge in studying the specie. How much has it changed since the time they first appeared, for example, and the mapping of the biological history...

On a completely unrelated note/rant, we could've saved much tree if the Cornell notes system is but abandoned. Now, the notes are taking practically twice as much paper as they used to be in schools because of the schools' attempt to adapt to the system in a "convenient" way, which includes using only half the entire paper for notes and the other half for pointless "questions" and empty space. Save the trees, dammit!