Because starving to death is so uncomfortable... almost as bad as watching your loved ones starve to death... People don't fight to survive for the "long run" - they fight to survive to stop the pain...
Living in “fly over country”, it is possible to make it, if prepared. or maybe not. No harm in being prepared.
Particularly if one values life and are willing to endure hardship. Perhaps they have young children that will need assistance and knowledge, etc. Miracles happen. Who knows how wide spread it might be in effects?