Region unblocking can also be nice if you want to buy something but it isn't available for sale in your country. It's kind of annoying when you want to give a business money but they don't want to take it because you don't live near them. This tends to happen in music when it's only licensed in certain countries, so the only way to buy it (other than flying to where it's sold in CD form) is to region unblock.
The other use case I see for it is simplicity when traveling abroad for extended periods of time. So, for example, I used it while studying abroad in Europe so I could continue patronizing some U.S. services that weren't available where I was. Some of them I could've used in Europe as well, but it was simpler to just connect via VPN, buy in USD, and pay with my U.S. debit card without any currency conversions or concerns about fees.
But I don't think it would be worth paying for. I just connected to my university's network, since it was free, and I had to connect to it occasionally anyway.