“If people do not believe that mathematics is simple, it is only because they do not realize how complicated life is.” – John von Neumann
Every situation has numerous variables, and the instant human choice is added to the equation it becomes beyond the power of any computer to predict the outcome for individuals.
Physics textbooks always assume a massless, frictionless environment to simplify the calculations, because starting students can’t take into account the losses. This is like the difference between a 16-year-old princess and a 46-year-old mature woman.
We all build models of what the world looks like, some are just more complex than others and applicable in more situations. Mathematics allows us to simplify the messiness.