Furthermore, even if the pace and breadth of current extinction were that dramatic, isn't the argument against that a purely emotional one? I sincerely doubt that most humans can even name a hundred species; would they really miss a few million if a few million others remained?
Just to be clear again: I'm not arguing against conservationism, I'm interested in the arguments being made for it. I believe we are conserving for own selfish purposes, and I'm perfectly OK with that. I just think it's wrong to call that "natural".
[1] https://en.wikipedia.org/wiki/Permian%E2%80%93Triassic_extin...