You have a better system in mind, than using human beings to interpret human matters?
Nothing wrong with using human beings as judges, as long as they don't bring politics into it. Law is based on precedent. Law is based on the language. It is not open to interpretation outside of the words already contained in the law.
If Scotuscare (my new word for it) were created in bi-partisan cooperation, and not forced through with bribes and shady deals, against public opinion, it likely would have left the SC open to saying "Sorry, if you want it to mean something else, go write something else." But everyone knows it has no chance of being adjusted in Congress. So the judges did what they could to save it - which, unfortunately, is outside their charter and will now forever open law up to revisions in the court room.