Thoughts on Breaking Bad and Rewatchability

I watched last nights episode while the lady fell asleep.  I agreed to re-watch with her tonight, but couldn't sit through it.  Clearly, Breaking Bad's final season is going well so far and everyone is putting it up there as "one of the best shows of all time" or certainly one of the "best final seasons of all time," etc, etc.

In contrast, I can re-watch any Game of Thrones from any season multiple times with joy.  So what is the difference?

For one, there are future mysteries embedded within the Game of Thrones story -- hints at major movements and things to come -- on a much larger scale than Breaking Bad.  Breaking Bad -- we know what is going to happen -- Walt is going down -- and we're just waiting to see how.  Also, Game of Thrones has more up and downs.  Moments of great triumph and great failure and surprise.  Some characters we initially despised, we later start to like.  With Breaking Bad there is only one movement: down.