Subtitles are a great example of an adaptation that helps more than (in this case auditory) disabled people.

When I had small children I stopped watching anything that wasn’t subtitled because I couldn’t control my noise environment. Either too loud to hear when the children were playing or had to keep the noise down when they were sleeping.

It gave me a great appreciation for assistive technology in general.

Besides, it helps a lot when voiceover is in a language you are learning or can’t comprehend by hearing well enough (like Trainspotting)