When I read Eliezer's articles or books, I feel that math is very cool, and that's why I love learning math.

But sometimes, people around me say, "Why do you need math? How is it even useful in life?", and while I disagree with them, I am completely unable to articulate my intuition to explain why math is necessary. Maybe it is connect with the fact that I can't articulate what exactly math studies.

So, if someone were told you that math is useless, what would you say?