What do you think about the police?

[FlatAssembler]

I am quite sure people a few centuries ago thought similarly that human nature makes a society without slavery impossible.

The difference between the two should be obvious, but I’ll tell you anyway: The support of slavery is an expression of human nature - the desire to control other people. Anarcho-capitalism requires the opposite - not desiring to control other people. Since anarcho-capitalism would inevitably lead to an oligarchy of security firms controlling other people, your fantasy is doomed from the start. It doesn’t do away with the State, it simply swaps a public State for a privatized one. It is therefore not ‘anarcho’ anything.

Boru

Well, in real life, nothing is ever guaranteed, but I think everybody being armed in a libertarian society would do a good job preventing a state from forming.