You must also like losing characters, items and hosted environments and getting locked out of the game thanks to bugs and connection troubles and game balance changing patches you can't reject.
That's what I was sorely missing from my single player games, yep.
P.S.: With a bit of symlinking, I just make most of my games save on Dropbox. It's free, it retains older versions if corruption happens and it leaves me offline copy, which gives ability to easily move to another cloud storage service. No need for Blizzard lock-in.