Mathematics is the foundation of modern science, just like building a house. The foundation is good, but buried in the soil is very wasteful. Why do we have to lay the foundation? Because if you don't lay a good foundation, the building can't afford it. Mathematics can train people's thinking, improve people's understanding ability, and at least help them understand modern science.

Mathematics exists in all aspects of life. You said it was useless. Take LOL for example. When Galen and Raven fight, both sides will calculate their own blood volume, their own skill damage and the expected damage to each other. Masters tend to pay attention to details. Faker is so awesome because of good operation and accurate damage calculation. These are all related to mathematics. Learn math well and you will become the strongest king.