Which places you frequent during the evening's wee hours should be just your company and your business. Not the Internet service provider's, not the police's, or any other eavesdropping nosey parker. You don't even need to conceal something lewd or immoral-privacy is a matter of principle.
Sadly, people who monitor your internet traffic and know more about you than you would like to think of losing out on this human right. It is a layer of darkness between browsing yourself and the rest of the world. A VPN works by rerouting and encrypting your connection before you send it to the place you would like to visit.
infographic by: dataprot.net