Chess, I do not advocate killing animals for fun.

Kcarlie, people have always had that sense of impending doom - "environmentalists" have it bad. Lacking religion, they find their solace in that Mother Earth thing. But I doubt human beings are capable of COMPLETELY eradicating ALL life from the planet. Should humans annihilate themselves, something will survive (or again spontaneously evolve) and it all starts over again. Eventually, the earth spirals into the sun, or the sun burns up, and it's over. Absolutely nothing for us to worry about.