English, because you have already learned it and have used it on at least one forum. (even if you only used it to ask what many think is a stupid question, or perhaps you are a troll)
If you learn something else you might never use it as much as you have used English above. If your personal experience puts you in an experience where a different language is needed, knowing that language will have a large ROI. Knowing a language tends lead you to experiences where knowledge of that language is useful, even if the language is useless to the rest of us.
If you learn something else you might never use it as much as you have used English above. If your personal experience puts you in an experience where a different language is needed, knowing that language will have a large ROI. Knowing a language tends lead you to experiences where knowledge of that language is useful, even if the language is useless to the rest of us.