One of the big selling points for many people is that you can use your VPN to spoof your location, meaning that you can access content that may not be available locally where you are at that moment. This is great for those who frequently travel and want to keep up with local shows.
Depending on your service of choice, you can use it to unblock content from Hulu, Netflix, YouTube, Amazon Prime Video, Disney+, and much more. Normally, you just need to connect to the VPN, then select a server based on where the content you want to watch is streaming, and then you can watch it like you are in that country.
Some VPN services, particularly those with fewer servers, may have issues when it comes to unblocking some streaming content as their servers may be blacklisted by the content provider if they wish to stop this process.