While the classic use case for VPNs is to hide your IP address and keep your ISP and other snoops from monitoring your online activities, it's not the only reason. Once in a while you might need to appear like you're in a different country without leaving the comfort of your own home.
If you find a dimension intereseting, we recommend you pick up one or two facts that you find intriguing and place them into your memory. That way you will have 2nd degree information about the topic if it comes up in conversation.
Accordingly, you can do the same with others as well.