One of the beauties of the US Constitution is that it was written in (relatively) plain language, not convoluted legalese. I believe this was done intentionally.
Many of us still believe that it means just what it says.
However, here we are, a couple hundred years later, and things have gotten to the point of major legal matters being decided "depending on what the meaning of "is", is..."
The Supreme Court is not infallible. Sometimes, it is not even correct. But under our system, no matter what the decision, only the Supreme Court can over rule the Supreme Court.
So, a 5-4 decision on something that ought to have been 9-0 happens all too often. TO me, this speaks more to the make up of the court than to the issues themselves.
Apparently asking some people to place their work above (or aside) from their personal beliefs is simply just too much. And the fact that those people get on the court is our problem, more than theirs.