Travel and leisure
Learning a new language opens up a world of new opportunities. If you choose to learn a commonly spoken language, such as Spanish, French or German, you can travel practically anywhere in the world and not have trouble with translations.
You can confidently go about your business and in another country and speak freely to locals and other travellers. You will have a much better experience as you can effectively communicate with much more people, which will ultimately open up your mind and put things into different perspectives regarding the different cultures of the world