Socialism is cancer. For society, for individuals, for everyone.

National borders are a great idea - it's decentralization in action.

The structure of _government is the problem.
When 20-50% of your taxable income is spent of killing women and children in some other country, and you have zero say in it,the bureaucracies are out of control.

Decentralization is the key. Smaller and smaller borders are a natural function this.
(state autonomy for example with the exception of a nations borders, threat).

There is no perfect answer, as society is in constant flux.
Authoritarianism (the extreme being totalitarianism) is no answer.