I like the show. Yea, there are a bunch of folks who might be a butty short of a picnic, but you can pick up all kinds of tricks and snippets. An emergency situation does not have to be an end of the world scenario. Hurricanes, snow storms etc have proved that in recent years.
These people aren't preparing for a hurricane. Hell using that criteria I had a bug out pack when I lived in NOLA. These people are preparing for the end of civilization as we know it as they're all happy to explain when they have the "what form of crazy are you" interview at the start of each episode.