You make an important contribution as a volunteer to children's education and / or to protect nature.
You live and work with locals and you get to learn the real life of Costaricans.
Every day you deal with opinions, lifestyles and routines of a different culture. These new found knowledges teach you more about yourself!
You learn or improve your spanish skills. Language is the key to understanding the values of a different culture.
Work experiences, internships in foreign countries are indespensable in times of globalization. A volunteer based commitment will open many doors for you.