Is it worth it?

Someone asked a question "is learning ------ (language) worth it?"
The answer is "yes". It doesn't matter which language it is.
Now, there are some people who don't understand how languages work, who will tell you it's useless to study anything else than Power languages and come up with idiotic parallels, like "it's like physical exercise, learning an isolated language is like doing some petty little movement with your hand, and learning a big language is like doing whole body exercise, it's obvious you get more use of the whole body exercise". No. Languages are not like a physical exercise in that way. The effect on your brain is the same whether you learn a big, strong, living language or an extinct, tiny language with no relations to any modern language. You will still get all the benefits of the "physical exercise".