I usually rely on audio description for movies I haven't seen yet. If its a movie I've seen several times, for example, the goonies, then I don't need it. Hell, I don't even need it for transformers anymore. But movies like batman the dark knight rises and the like are kinda better with audio description. Another reason why audio description is good is because sometimes the comedic elements aren't portrayed via sound, so you need the audio describer to tell you the comedic element you may have missed. Also, sometimes theres certain points that help with letting you know what happened to reduce confusion. For example. In batman: the dark knight rises, the special agent cocked his gun, and the describer didn't say anything. Now I know, one of Bane's henchmen didn't sneak up behind the agent and pull a gun.
Heroes need foes to test them. Not all teachers can afford to be kind, and some lessons must be harsh.