A lot of things in modern democracies, or even older ones (like the US's federal constitution) are really there to act as roadblocks and prevent a simple majority of voters from electing some shitty politicians who make wild changes in the law. It's a bit like that scene in "Alien" when Sigourney wants to blow up the Nostromo, and has to go through a ridiculous process of flipping switches and raising and turning and lowering some metal cylinders inside a control panel in the floor: blowing up the ship doesn't really need all that stuff, but it's just there to make it hard to do quickly and easily.