Pete, because the people wanting "Global control" tend to believe 99% of the world are incapable of existing without being told how to live. And those people tend to want more and more power. It's called Soft Tyranny, which usually collapses after it's ineptitude reaches critical mass leading to hard tyranny.
⚧ C.T.L.W. You figure it out
My Endo doc went over my blood work. "I see your estrogen level is now at 315, do you feel like you have too much Estrogen now?"
I told her "... N... N.. No..." and started crying.
That does not change the fact that certain things are best solved as a whole planet than at a local level and visa versa.
But it is not only the globalists that will attempt to increase their influence and power, it is just as much the "locals" all the way down to the very local level. There are far far more abuses of power and attempts to gain even more power on the local level on a daily basis than there is and has been on a global level.
It is far far easier to expand your influence and power and take full control of a local area than a large area. We have seen it time and time again. A cult leader having absolute control over a hundred people, a local mayor or copper abusing his power for personal gain, a local business man who controls a large portion of the wealth in the area, abusing his or her standing for even more personal gain.. the "we cant go after X because he gave us our jobs" syndrome.
Local governments can be tyrannical too.
Look at Somalia.
Their very local guerilla warlords are tyrants.
They have no ambitions of one world government whatsoever.
They are not globalists.
If we had everything be local governments, we'd have tyrants like that... lots of warlords imposing their tyranny on small groups of people.
It is better to have a strong central government.
It is easier to keep ONE government honest than try to keep thousands upon thousands of local warlords in their place.
Lets see where this "self determination" aspect in US policy was put in place.
Half of central and south America.
Iraq, Iran, Afghanistan, Italy, ...
ahh fek it, too many countries to mention in just the last 60 years.
US "Self determination" starts and stops in what is the US self interest at the time.