It is useful to have Spanish lessons for the following reasons:

1. Spanish is often the foreign language of choice after English
2. There are an estimated 548 million Spanish speakers as a first or second language, including speakers with limited competence and 20 million students of Spanish as a foreign language.
3. Spanish is one of the six official languages of the United Nations, and it is used as an official language by the European Union, the Organization of American States, and the Union of South American Nations, among many other international organizations. (http://en.wikipedia.org/wiki/Spanish_language)
4. Learn spanish to prepare for study abroad
5. Learn spanish for business opportunities