Speaking Spanish is a basic need for daily life in Latinoamérica. You can travel safer because you will be able to communicate with the local people in their native tongue. (In restaurants, hotels, airports, stores etc.)
You will be able to meet a lot of people in many countries not only in Colombia.
Speaking Spanish will help you understand the culture, because a language is a reflection of the culture.
You can do volunteering in many organizations that work with us, which dedicate work to animals, children, elderly people, and pregnant women.
You can also create business alliances.