One thing I will say about having digital copies... it has so far been very convenient.
The first XBone that I picked up had the grinding disk drive of doom; It's a well-known hardware problem that should have been fixed a year ago. Anyway, I had already downloaded 4 games before finding out it was defective.
After spending 20 minutes running out and replacing the system, I was able to get the whole new console set up, with my games queued and downloading, within a couple of minutes. ALL of your game saves and files are stored on the cloud by default, and load when you sign in on a new console. In fact... you can even sign in on a friends' console, download a game, and play on your own profile- but your friend then needs to purchase to play on their own profile.
All in all, I'm very satisfied with the all-digital experience, so far.