Such may be the case again. Wolves are just as easy to kill today as they were a hundred years ago when they were all but eradicated. Their survival, as with any other critters roaming our lands, is at our will and pleasure. When we tire of their nostalgic appeal and our sense of guilt returns to where it should, they then may also go the way of the Dodo. Perhaps we may be magnanimous enough to keep a few as pets or in zoos, like most of the other wild beasts that someday will be gone from the wild places.
Species come and species go. That's the way it's always been, and there are no exceptions. Our number will come up sooner or later, but for now, we can enjoy being A#1, the dominant species of the globe, masters of all we survey. I doubt seriously we will ever get smart enough to prevent our own demise. Therein also, I already believe our days here are numbered as a matter of faith, but that's a good thing (well, for some of us anyways).
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The ultimate result of shielding men from the effects of folly is to fill the world with fools.
-- Herbert Spencer, English Philosopher (1820-1903)