Not every cop or governement is rational and fair so by your logic, police and governement should not be armed.
Correct. Now we're getting somewhere.
I would be happy to live in a gun-free society if nobody else, especially the military and police, also were disarmed.
The sooner the people of the world disarm their governments, especially of nuclear weapons*, the better odds our species has of surviving the 21st century. But to do that, the people would need reason on their side, they would need to be able to point to
a society of non-aggression and contrast it against a violent government. That's impossible in any nation as attached to violence and weapons as the United States is today.
*These weapons will either be dismantled or they will be used. The world can't wait forever.
On a fundamental level, they (Iran) have as much right as any other country to own and operate their own nuclear weapons.
What about ISIL? They consider themselves a nation too. Do they get nukes, or because you deem them unworthy should they be disarmed? The point I'm trying to make here, is that for sanity's sake, a line must be drawn somewhere. You may draw that line differently from someone else, but your argument must be logically consistent, else you render yourself a hypocrite and a fool.