Which I applaud for the same reason I applaud some of the extinctions we have caused.

Which extinction do you applaud?

I can't help but feel like life is easier without sabertoothed tigers roaming the streets

There are non-extinct big scary cats. They don't cause much trouble. We'd be doing fine without that extinction.

Smallpox. And I hope we succeed with Polio over the next few years.

Oh wow, no exaggeration. I stand corrected.