I’m a huge math proponent, but I will be the first person to say this: everyone does not need to take calculus. What people need is to learn how to think quantitatively. Using the chain rule is not something that’s going to go on in your daily life. How many times in your day do you use a derivative? I’m going to guess if you’re not a scientist or an engineer, big fat zero. But how many times a day are you faced with problems? And by problems I mean a decision between this or that. Without even knowing it in your head you quantitatively work through it and decide which is the best. That’s what math helps you deal with: quantitative reasoning. Seeing a problem that might be a little different than every single problem you’ve seen in your life, but using what you know and what you’ve experienced to be able to make an informed and good answer. That’s math.