Libertarians believe in no government and survival of the strongest. Historically Libertarians practice continuous warfare.
https://en.wikipedia.org/wiki/Anarcho-capitalism#History Other than Vikings living through raiding unsuspecting villages, I don't see a culture of selfishness actually working. Eventually collectivism of some sort will overpower warlords.
WTF have you been smoking?
You take one example, of
Medieval Iceland, twist it all up
wrong, and say "historically Libertarians practice continuous warfare"? Come on, man. Nobody can be that stupid. You
have to be trolling. The Vikings were from
Norway.

Tell me how a society based on
this practices continuous warfare.
Wherever one finds Utopian thinking one finds ignorance and foolishness in abundance.