I find nations problematic because they are units that are too large and therefore are controlled by groups not easily overseen and almost impossible to make accountable by the population.
The USA is not only a nation but an empire, which is like a nation with an integrated, violently imposed pyramid scheme.
If only we could find a way to organize into independent smaller units that federate into larger units and remain tolerant of the differences of the smaller units. Ironically that is what the USA seems to have attempted to do with their united states thing?