Mathematics improves your analytical and problem-solving skills, creates the basis for systems thinking, improves the skills needed to reach logical conclusions, expands the mind to handle unknown tasks with ease and confidence, learns through trial and error, and promotes cautious and careful thinking. Mathematics, especially mental arithmetic, is known to greatly increase brain capacity. The study of shapes, numbers, and patterns stimulates the development of strong observation skills and stimulates critical thinking. They also found that the amount of brain chemical present predicted changes in mathematical performance about 19 months later; however, there were no differences in the levels of the chemical present before the teenagers stopped studying mathematics.
In short, while many people tend to believe that math is good or bad, math is necessary for good health.