Heck, I live by Yellowstone. The Snake River plain and all of the previous hot spots spread across Idaho like a smile.

Assume the Yellowstone caldera blew. How would you go about stopping it? A cork? A fire extinguisher? Yellowstone blows and the WORLD suffers terribly.

But I can't be bothered to worry about something I can't do anything about. So I visit the park, watch the geysers and hot pools, and not worry.