The point is what would you do after learning or may be spending real good amount of time with it, what is the real need.
I learnt sanskrit for more than 6 years and have passed upto threeeteeya(an exam to test your sanskrit skill).
When i learn something i should be able to converse about it with many people as i can and help spread the knowledge or information. But learning an old language like sanskrit.
What i found after learning the language is there is a lot of history which doesn't fetch any real world gain to my career, my social life, my finances or even recognition from a worldwide community.
Listen to this man. Anyone who studies a dead language for “real-world gain” will probably end up disappointed.
The only real reason to learn is so you can read old books in that language. And you might get a few points of social prestige, but that alone generally won't make up for the hours and years you put into it.