Decentralization is very messy, but it's worth it. :-)
If we were to compare it to the all the states of the U.S. or from my place of birth, the states of Australia, it all leads to duplication and redundancies, but it preserves control at the lowest levels. It is a principle that encourages multiple solutions to a single problem.
Having said that, it is not the magic bullet to solve all things. It is a tool to be applied to a specific end. It carries with it a burden on the part of the individual to actually care about the freedoms of others, whether we agree with them or not. That is in short supply in our modern era. Distracted by pleasure, passion and the pursuit of personal happiness, we barely have the time to care about others we like, let alone the ones we don't like.