You hit the nail on the head which naive interpretations of libertarian isolationism often miss -- unchecked problems spread viz fire, pollution, garbage, disease outbreaks, crime and poverty.
As one's liver combats the effects of pollution in your bloodstream by filtering it, so, as a society, we have developed certain organs to combat the degrading effects of similar sorts of problems.
As one's liver combats the effects of pollution in your bloodstream by filtering it, so, as a society, we have developed certain organs to combat the degrading effects of similar sorts of problems.