If you want to learn a foreign language, but you don't know which one to learn; or if you want to learn several languages and you don't know which one to start with; or, if you think learning a foreign language is too hard, and you want something that will be easier, the Spanish is definitely the best choice.
1. Spanish grammar is simple
Spanish grammar is remarkably similar to English, so it's not difficult to learn. Yes, adjectives follow their nouns, and there are more verb conjugations, but putting together a sentence in Spanish works in almost the same way as in english.
2. Latin roots make it easy
The Latin roots of Spanish reflect the Latin roots in English. Many new words will be easy to learn just because their etymologies are easy to recognize, such as la mano which we recognize from "manual", as in "manual labor".
3. Spanish is insightful
Understanding of Spanish will give you better insights into Latin and its effects on English. Often, it will illuminate many of those cryptic medical or biological terms. And studying the grammar of another language gives you more insight into your own.
4. There are few grammatical exceptions
Unlike most other languages, in Spanish there are very few exceptions. There are few irregular verbs, most conjugate normally. There are few nouns where the article doesn't match the ending (like la mano), most match up as expected.
5. Spanish is phonetic
Spanish is 100% phonetic. Words are pronounced exactly as they are written, and they are written exactly as they are pronounced. When learning a foreign language, this is invaluable.
6. Spanish is all over America
In the United States, many jobs are done primarily by Spanish-speaking people. Knowledge of the Spanish language may be the thing that makes it possible for you to become a manager or gain some other leadership role. And for many jobs, such in a hospital or police station, it may be a vital job skill.
7. Resources abound
There is no shortage of good movies, books, and music available in the Spanish language for learning or practice. (Or, if you just want to enjoy a good film or television show without subtitles...)
8. There are so many great travel options with Spanish
There are many beautiful travel destinations in the Spanish-speaking world which you could visit with confidence, without the need of a translator or tour guide. It may be possible to travel without speaking a foreign language, but being able to communicate while you travel is priceless.
9. Spanish speakers are global
While Mandarin-speakers in the world outnumber Spanish-speakers, most of those who speak Mandarin are in China. Spanish-speakers, however, can be found all over the world. With the exception of Canada, Spanish is either the first or second language in every country in both North America and South America - that's two whole continents, without even counting Spain! So your chances of meeting someone and using your Spanish are quite high.
10. Spanish increases confidence
Learning Spanish will convince you that you can learn a foreign language, and it might even give you the confidence to try something harder!