There are many different forms of government. It started with hunter-gather societies that needed to figure out how to live and work together. Humans are social creatures, and communities that didn't organize ended up dead.
I currently live in an advanced modern democracy (actually it is not a pure democracy, but I will still call it for lack of a better term).
I was born into this democracy. I didn't have a choice. That being said, I think our system of government is pretty good. And it gives me a lot of benefits that I appreciate. These include....
- A stable economic system that allows me to work and buy things. I don't have to hunt for my own food. With money I can do the profession I do well as a specialist. Then I can buy things without having to worry about how the exchange will work.
- A set of laws that enforce shared values. If my neighbors are shooting their kids with a cross-bow, I don't have to sit idly by. The police will come and stop them, and the government will give the kids a chance.
- A set of guaranteed rights. I can say "Trump is a moron" without any fear of repercussion even though Trump is the president of the United States.
- A set of institutions that all work together. We have a highway system, a public school system, a set of hospitals that function with shared values. We have protections against pollution, and food safety and diseases.
I could go on.
I am happy to assent to this government. It works. It provides me with things I need for a decent modern lifestyle. And, I can't think of a better alternative.