Obviously the thought of world governance brings up ideas of tyrants restricting liberties via socialism and communism. What if instead of these systems, a cooperative world government was in place whose only agreed upon role would be to strictly enforce a well written constitution, such as something like the US Constitution?
To me, the main problems would be voter fraud, a federal reserve type monetary system, big tech monopolies and also a sense of complacency amongst communities.
If by some magic (perhaps blockchain technologies) these problems could be fixed, I don't see how a world government, or a world constitution would be a bad thing.
I would love to know others thoughts about this
Great topic, but as others said, cultures are very different in different parts of the world. American values are very different than Chinese values, Japanese values, Middle Eastern values, so on and so forth