I am somebody who can browse fine without any accessibility features but they help me anyway:
* Subtitles, so I can hear better when there's background noise
* Image Descriptions, so I can use a slow connection
* TTS and Read-Aloud UIs: so I can use my music player while it's still in my pocket
All of these are features I don't need but I do use, because they make my life better. I suppose my point is: Make shit accessible! It benefits everybody, not just the people who need it.