Thoughts about learning languages.

Today I was thinking about the reasons why am I learning the English language.
I've found several reasons for it.
The first and main reason is my curiosity plus my habit to achieve goals that I set.
The second one is the ability to communicate with the whole world.
The third reason is that learning languages is a good exercise for a brain.
And in the end, it can be considered as an investment in the future, if you approach the issue from a practical point of view.