The problem with that is, its an unknown, the effects could be far more devastating than previous mass extinctions, even the worst one about 252 million years a

The problem with that is, its an unknown, the effects could be far more devastating than previous mass extinctions, even the worst one about 252 million years ago. If you extrapolate the speed of current devastation, extinction and let it play out over the time-span of the last mass-extinction, there really wont be anything living on earth besides micro-organisms. Non-selfish arguments for why we should not kill off other species? Why should we not kill all life bigger than a pea on earth? Ill let you take that one.