If someone is of the opinion that that Constitution needs changing, the method is clear; amend it according to the rules set forth in the Constitution. As amended, it remains a contract between the States and the Federal Government, and as long as there are States in the United States it needs to be observed as written, as do all written contracts. If the words in the Constitution don’t mean anything, then the words in all other contracts don’t mean anything, nor do they in law. Words may not be perfect or immortal, but they are all we have to communicate and come to agreement.
I agree with all of what you said in principle, but, let’s face, the Constitution is simply too difficult to amend with the present rules. With a lower threshold for getting amendments ratified, we wouldn’t have to worry so much about wrongheaded SCOTUS decisions doing it by judicial fiat. And (I’m sure I’ll get flamed for pointing this out, but what the heck) if the Framers were so darned infallable, and the Constitution so ingenious, then why did we have to fight the bloodiest war in our history to settle the slavery issue? And, on a less dramatic note, why have we tolerated a SCOTUS that regularly strikes down federal and state legislation, when that power is not given to it anywhere in the Constitution’s text?