Human nature is a pain. Why is it that, when you have what you've always wanted, you find something more to want? This is likely the reason for religions teaching patience, forebearance, & tolerance--to overcome those baser human instincts. And one has to commend the Founding Fathers of the USA for recognizing (to a point) this tendency in people, while of course there was NO way they could foresee how the country would be technologically & every other way 235 years after declaring our independence from Great Britain.
Happy 4th & I'm going to keep pondering how to conquer that baser side.