There are 2 big flaws in your argumentation: 1) Tell humans their suffering doesn't matter. 2) A super-volcano eruption is several orders of magnitude worse t

There are 2 big flaws in your argumentation: 1) Tell humans their suffering doesn't matter. 2) A super-volcano eruption is several orders of magnitude worse than St. Helens, a scale that human history has not seen yet. It would affect the whole planet and wreck ecosystems in the whole planet, far beyond North America. We're talking about likely end of civilization. You don't have logic against that.