Learning a new language flexes your brain muscles and can be really fun. Honestly, it’s something you either do at home or in a classroom, and if you don’t want to go out and spend money, this is a very productive use of your time.
You never know what job opportunities might open up for you if you learn a new language. Also, imagine how many more people you’ll be able to connect with if you can speak their language. If you’re interested in traveling to a country where they don’t speak English, you could learn the language first at home and then plan a trip there!