The key is, left alone.
That document has not been left alone.
You wouldn’t own guns today without that document. You wouldn’t be participating here without that document. Police would be breaking down your door without a warrant without that document. You personal effects would be subject to search and taking sans warrant without it it.
Seriously, you don’t see any difference in our society today with that document, than we would see if it were not in existence?
The document is one half of the quotient, that does protect our liberties. The other quotient is our demand that it is adhered to by the courts. Without that document, we’d have no standing in court.
Without it, we would have been slaves long ago.