I'll answer my perspective as I use Spotify and prefer to use the desktop app when working than my phone. The reasons are: - I use headphones, and I use Skype,

I'll answer my perspective as I use Spotify and prefer to use the desktop app when working than my phone. The reasons are: - I use headphones, and I use Skype, so I wont use two pairs or swap them when Skyping. Skype for Desktop is easier to use than the phone (i.e. screen sharing, sharing links, etc). - It is far easier to skip a track or pause it using a mouse when you're already using the mouse, than to take your hand away and use the phone. - I can't watch YouTube movies on my PC when my headphones are in my phone.