The main advantage of using a virtual private network (VPN) is enhanced security and privacy while browsing the internet. A VPN creates a secure, encrypted connection between a user's device and the VPN server, protecting data from interception by third parties. Additionally, VPNs allow users to access content that may be restricted based on their geographic location, thus enhancing freedom of information access. By masking a user's IP address, VPNs also increase anonymity online, making it more difficult for websites and services to track user behavior.