“UNLIKE you, I prefer to be as prepared as possible.”
Actually I believe in being prepared, just not paranoid.
In today’s mobile world there is very very little you can do against a sophisticated biological attack. It will spread so quickly as to make any precautions useless.
Its a lot more difficult to engineer a mass attack than Tom Clancy thinks. Dispersal of most agents is difficult and takes special hardware. Further the amount of time most agents will survive when exposed to the sun is quite short.
Diseases like Ebola kill too quickly for it to spread very far.
Nuclear is far easier and just as effective.