That's part of what it means to live under a constituional republic - we elect a government whose primary role is protect us from external threats to life and liberty. The process of evaluating just what constitutes such a threat is carried out in the arena of politics (as ugly as that process may sometimes be) and the resultant decisions are executed by those we choose to represent us. Does it always work? Well, as Winston Churchill famously said, democracy is the worst form of government, save all others.
A constitutional republic!
You don't live in New Hampshire, you live in your own little world.