I hardly listen to cast recording at all anymore.
The only cast recording I've listened to in the past month has been the Dead Outlaw cast recording, most other shows I love I listen to an audio bootleg.
Most of the time it's the instrumentals for me, sounding quiet and boring most of the time. Sometimes it's the vocals, most being mixed to sound dead, and trapped almost.
I've listened to audio bootlegs and watched bootlegs ever since I got into the theatre community, finding small minute details amusing, and hearing how the score is supposed to be heard, albeit digitally, one of the best things that could be offered in a recording.
It's also a great way to preserve what wouldn't be preserved, ex. a replacement cast, an understudy, and so on. I think bootlegs have importance in the theatre community, and shouldn't be shunned like the devil himself.
“I'd rather be a creature of the night than an old dude.”
― Gerard Way