Enabling WPA3 on a wireless network provides robust security by using modern encryption methods and management of authentication protocols. This prevents unauthorized users from accessing the network without the correct credentials, thereby securing the wireless communication. WEP is an outdated and insecure encryption method that is easily breached by attackers. Hiding the SSID does not provide security, as the network can still be detected by attackers with the right tools. MAC filtering is not a robust security measure because MAC addresses can be easily spoofed.