The reason we argue so long and so loud about the meaning of the Constitution of the United States is because its authors — of the original document and many of its amendments — clearly wanted us to. Cheeky monkeys.
Why else would the pepper the thing with fuzzy phrases and weasel words like, “a more perfect union,” “cruel and unusual punishment,” “from time to time,” “hold their Offices during good Behaviour,” “a Republican Form of Government,” “A well regulated Militia,” “unreasonable searches and seizures,” “a speedy and public trial,” “Excessive bail" if it were not to give their posterity things to incessantly argue about.