Gravity is a set of rules for how the physical universe interacts and may drive natural constants like the golden ratio and pi a circle because when you think about gravity pulls things in together hence a circle and not say a square. Gravity defines acceleration which is probably related to the golden ratio natural log bounded by an upper limit, Presumably because unbounded wnything is unsustainable. Given any unbounded limit the universe would have either imploded or exploded. But alas we exist and that is not a why it is simply an nonparametric observation of what is the why is not actually Relevant. And so everything tends to have its counter balance.