Chris “Monty” Montgomery (a creator of Ogg Vorbis and I believe Opus) explains why you never need more than 16 bits of bit depth for audio playback.

The video segment in question starts at 8:40, though the entire video and its predecessor are well worth a watch.

Monty also tried making the argument against 24/192 music in written form in the past: https://web.archive.org/web/20130115154647/https://people.xi...