Math and related classes were always easy subjects for me In high school and college. One you memorized the method/process to solve the problems it was simply a matter of applying it. Of course in life you only use the simple stuff.I spent one year teaching maths - perhaps the most frustrating job I ever had. Some kids like it, understand it and don't really need teaching. Just give them a push in the right direction and they are off: solving quadratic equations, proving theorems, calculating angles and working out the formula for adding all odd numbers from 1 to 100. Others just don't get it at all - forget calculus; they can multiply a whole number by 2 and still get an odd number.
But, most people never need the maths they learnt at school. 50 years later, I certainly don't need (or remember) 99% of what I was taught and teaching at school and university. Unfortunately, future generations of engineers, computer programmers, architects and even biologists, to name but a few, still need to have been taught the basics in order to appreciate the more advanced and complicated maths.
. 
