"Digital is just 1's and 0's."
We've all read this, over and over... And you know what, I was the same. I saw this today and it really changed my opinion. It's Adam Savage and two other gents who really go though the differences between expensive and cheap digital cables. They specifically address the comment above.
Consider my mind changed.
https://www.youtube.com/watch?v=AD5aAd8Oy84