I watch television with subtitles always on now. It's not that I'm having trouble with my hearing or anything like that... it's just that I don't want to miss anything. Whether it's because a character is difficult to understand... or the sound mix is awful... or there's information otherwise getting lost.
The most interesting part of subtitltes to me is the music descriptions.
(upbeat music begins)
(music turns darker)
(music growns louder and more intense)
(pensive music continues)
And my favorite... ( 🎵 )
The subtitles for sexytime is something for another post (moaning increases).