Studying languages has made me a more understanding and communicative individual. In the case of Swahili, we spent the majority of time third year discussing political and societal issues in East Africa. By forcing myself to think critically and express myself using a completely different grammatical system and vocabulary, I broadened my capacity to understand another culture.
Through language study, I have been lucky enough to travel, live and study in-region and forge strong friendships. A strong command of Spanish and Portuguese has also set me apart professionally in a job market where international experience and expertise are increasingly sought-after attributes.
It's one thing to learn about language and culture in the classroom, but it's so much more impactful to live somewhere for a year and see if your pre-conceived ideas about the country were accurate and which ones were not.
Don't stop at one language. After just a couple years into your first one, you'll find you can pick up completely unrelated languages because your mind begins seeking the subtleties that make acquisition easier.