Poltics / New system?

I was thinking about our social organisation a bit. Since ever people were electing leaders , hoping they will make their lives a bit better. Our whole system operates in a way politicians show up, offer their programs for better tomorrow , people look/listen to them and eventually vote. We call it democracy but personally I don't see it that way. Why do people hope that someone will take care of them? Take care of the country itself? Honestly , term state/country is illusion by itself. It represents nothing more but a formed group of people who decided to give themselves a name (name of group) , put some flag, and elect the leader. Seriously? What bound any of those people? Nothing.

Point is that all people of this planet are connected to each other and there is no reason we live divided like this. We call ourselves conscious but yet we fail to see how divided we are. In this modern age when we are able to know everything about each person on the planet, in age when it's possible to be united as one nation, for good of all of us, to share resources in a fair way, what we do? We make war with each other. I can understand that animal kill another animal for food, or some animal to kill another let's say for fun (but that animal is probably a hunter), but we humans, conscious living creatures, to kill each other? Look this with Russia for example in Ukraine . They fight over territory. How foolish. And most sadly is that people keep being tricked to believe in some leaders over and over.

My general questions for this thread are:

1. What do you think about current society system?
2. What kind of system you would like to see?
3. How you accept the idea of one nation instead of many, many, many smaller ones?