[cmh89]

I personally don't want to live in a bland, dead world.

To me its like climate change. The climate change, just like species go extinct. But humans are exasperating both processes in a ways that will ultimately make living on earth worse for future generations.

[BurningFrog]

Species going extinct doesn't make the world deader.

"Bland" is a better argument. If one bird species spreads across the world and outcompetes 10 regional species, there will be just as many birds as before. There will be less regional variation though.

[cmh89]

>Species going extinct doesn't make the world deader.

It depends on why the went extinct. If they went extinct because humans destroyed the habitat, rather than being out competed, then it's unlikely as much life or any life can just move in.

See the coral reefs or Klamath river

[BurningFrog]

Agreed.

[AlexandrB]

It won't be a dead world - but I sure hope everyone likes rats, cockroaches, and jellyfish - because these are the species that seem to be well adapted to living in environments where other animals have been driven out.

[a13o]

Don't forget humans in that list

[ozim]

Well there will be crabs as well because of carcinisation