Here's where a good dose of mobile data is excellent for the ill:
Within the last month I spent a week in a hospital bed.
My 3 "all-you-can-eat" data plan enabled me to watch TVCatchup on my phone all week, thereby meaning I could watch whatever channel I wanted, get it in decent resolution, and saved me forking out £15 quid of the "pocket money" my other half gave me on the tv and phone system above the bed.
It also meant I could use my own headphones rather than those provided that may well have previously sat over numerous pairs of seriously-ill and possibly contagious ears, so it was good for my health as well as my pocket.