VPNs are fairly simple tools, but they can be used to do a variety of things, such as:
Access to a business network when you are away on vacation: VPNs are frequently used by business travelers to access their business network, including local network resources, when they are gone. Local resources should not be exposed directly to the Internet, which increases their security.
Access to your home network when you travel: You can also set up your own VPN server to access your own network when you’re away from home.
Ability to hide browsing activity from your local network and your ISP: If you use a public Wireless connection, browsing activity on non-HTTPS sites is visible to anyone who is connected to that network, if they know how to follow this activity. If you want to hide your browsing activity for more privacy, you can connect to a VPN. The local network will only see a secure VPN connection. All traffic will be sent through the VPN connection. Although this way you can avoid monitoring your Internet Service Provider connection, keep in mind that when you subscribe for a VPN service, they can still log traffic to their servers.
Aaccess websites blocked by geographical criteria: If you are a Romanian user and you try to access a site that is blocked in your country, you can gain access using a VPN located in another country that has access.
Avoid Internet censorship: For example, many Chinese citizens use VPNs to bypass the Great China Firewall and gain Internet access, respectively. However, this giant firewall has begun to interfere with VPN connections for some time now.
Download files: To be honest, many users use VPN connections to download files through Torrents. This can be useful even when downloading 100% legal torrents. If your ISP limits the speed at which you download files using this method, you can use a VPN to achieve higher download speeds. The same can be applied for other types of traffic that your ISP can limit. (If not limited by VPN traffic).