It introduces you to new people
Speaking more than one language opens you new opportunities for travel and is a great chance to connect with people you would have otherwise never encountered in your day-to-day life.
Understanding a second language might help you communicate with people from various backgrounds on social media and other online channels in today's increasingly digital age. Speaking a second language might perhaps help to break out of social media bubbles, where you only communicate with others from similar cultural backgrounds. One thing is for certain: if you take the time and effort to learn about a new person's culture and language, you will greatly increase your chances of developing a meaningful relationship with them.