Adding a second language as common as Spanish looks great on any job application. Also, if you want to be involved in international business, it is important to know how to negotiate deals in another language.
Over 20 countries in the world use Spanish as their official language. That means Spanish is one of the most beneficial second languages to learn if you plan on traveling a lot in your life.
Spanish is a derivative of Latin, just like English. Therefore, knowing Spanish will broaden your knowledge of English words. Other derivatives of Latin are French, Romanian, Italian, and Portuguese.