The power of the government comes from the people. Without their support there's no government. Politicians tend to forget that.
Although I'd like to live in a world without governments it's a natural thing for people to live in groups as it's safer and you can divide work and share knowledge. Another natural step is to get a group of leaders because if every single person would have the same voice you'd never get anything done. The grip of the government can weaken but it won't disappear. It is there because people want it to be.