I knew there was something wrong with New Zealanders. Living in the middle of a Caldera? Are you nuts? I like to visit Yellowstone, but I wouldn't want to live there. Then again, I suppose if a Caldera of that size were to ever release a super-eruption, it wouldn't really matter where you are. Instantly, or later on, we're pretty much all goners anyhow. It's either instant and painless or slow and painfully die of the poisonous atmosphere following an eruption of that magnitude. Still, even for a limited eruption, local mortality rates would be phenomenal. I guess that's the risk you take to live in a region like that with it's own benefits though. Still, I don't think that for myself I could suffer the sulfur for long. I like visiting some of the hot springs we have in Colorado but in small doses. The sulfur just gets to me too much after a while.
By the way, no disrespect meant to New Zealanders. To my limited experience with NZ you mostly seem like a friendly lot which is more than can be said for a lot of people stateside.