The value of learning math is not just being able to solve integrals and understand functions. Most people will never use that in their day-to-day life, not even most engineers, myself included. Part of the benefit is developing your brain to be able to think logically. A workout for the mind, if you will. I know I will never have to do a bench press outside of the gym, but I do it in the gym anyway because of the results that extend beyond doing that particular exercise.