Having a VPN is an intelligent choice to make these days, especially if you travel a lot and spend any time at all on public Wi-Fi spots—think airport lounges or your local coffee shop. These don't offer any of their own security measures, so you'll want to make sure your data is safe while you use it.
In addition to safeguarding you and your internet traffic, and by extension your personal details, a VPN will also allow you to access geo-restricted content so that you can stream your favorite movies and TV shows no matter where you are.
The biggest argument for getting a VPN is that in most cases, a VPN is a nominal cost each month—and there are even some free options that are definitely worth considering if you're pinching for pennies. For the price of a cup of coffee or a fast-food lunch, you could add protection to all your browsing sessions for the whole month. If you do the cost-benefit analysis yourself, you'd probably come down to the side of wanting a VPN.