For me, the answer is more or less the same as to the question why (or wether) you should learn Esperanto.

Certainly not because of the huge number of people/companies using it.

• Both languages are sometimes discredited, yet (or because of this) the community is more helpful than those of other languages,
• and sometimes more capable of helping, too, because most users know more than this one language.
• Besides, both languages helps you thinking different, and therefore more flexible than you would without it.