Seems pointless and inconvenient for me as they usually seem to be poor quality, and can you really listen to music in the shower, and are you showering long enough to benefit from it?
Or do you own one and use for a different purpose, like swimming or Kayaking?
Body wash and long hair shampoo plus conditioner takes me 10 minutes, full shaving routine takes me another 10. Yes, I listen to music through a bluetooth speaker. Yes, the quality is what one would expect from an inexpensive speaker the size of a soda can.
No, I don’t blare music when people are sleeping.
I benefit from it as much as I do from listening to music at any other time? It’s entertainment.