"We spend $0 a year on defense against meteor strike. Should I, as a citizen, be content with meteor strike happening every few years?"
"We spend $0 a year on defense against flesh-eating bacteria. Should I, as a citizen, be content with flesh-eating bacteria happening every few years?"
"We spend $0 a year on defense against maniacs going postal. Should I, as a citizen, be content with maniacs going postal happening every few years?"