Decentralization is important for Web3 because it ensures that power and control are distributed among many participants rather than being concentrated in the hands of a few central authorities. This ensures transparency, security, and censorship resistance in the Web3 ecosystem. By removing the need for intermediaries and central servers, decentralization allows for peer-to-peer interactions, increased privacy, and autonomy for users. Additionally, decentralization helps to prevent single points of failure, making the system more resilient and resistant to censorship or manipulation.