It guarantees the right of every user. Every personal has the right to decision-producing. Users also have usage of the database. The biggest advantage of decentralization is if a part of the network crashes, the whole network will work uninterrupted. The main reason why decentralization is better than centralization https://financefeeds.com/zama-raises-57m-in-series-b-to-bring-end-to-end-encryption-to-public-blockchains/