George, In some ways you are right, but some things in the rules are arbitrary.
For example, why are relief distances measured in club lengths rather than inches? It would be easy to say 36 inches and 72 inches instead of one and two club lengths. We could all get a band of tape on our clubs that was 36 inches from the end and measure that way.
Certainly tradition plays a big part in the sport and things like measuring in club lengths came about because of that, but they are still arbitrary.
Obviously why is the hole 4 1/4 inches in diameter? Gene Sarazen, among others, proposed a 6 inch hole at one time. Why is the ball the size and weight it is? Wouldn't it be easier for all of us math impared folks to make the ball 2 inches and 2 ounces and the hole 6 inches?
Other things such as why the slope of a course of average difficulty is 113 is rooted in mathmatical concepts that I've only just begun to understand and probably can't explain.