There is no doubt that Arabic is actually among the top most popular languages today. It is the first language of about 206 million people worldwide, and 246 million more individuals now use it as their second language. Up to 26 countries have chosen Arabic as their official language. Even the United Nations has set it as one of its six official languages.
The fact that Arabic is about 1500 years old could explain its massive popularity. Besides, it is pretty easy to learn as long as one has a great tutor, the necessary reading materials, and unabating determination.