Brian Vogel <@britechguy> wrote:

I would also be curious as to what the exact need is, not because it's any of my business, but because there are other possible solutions. 

Well, I found it useful for example because, until recently, I could not hear speech very well at all. My speech comprehension was below forty percent. A cochlear implant fixed that, and then I went bilateral. But sometimes background noise still drowns out what is being said. Enter subtitles.