You still have all the same benefits you mentioned above, minus the ability to turn off distractions:
• You don't need to own an ebook reader or tablet. Amazon's Kindle App is free and works on practically anything: Mac, PC, iPhone, even a Chrome plugin if you don't like having a desktop app.
• You keep a physical collection in your reader just as you do a bookcase. It's not the exact same thing, but that's something I noticed recently: hardly anyone visits me at my apartment, but I am often going to meet people at cafes and with me I bring my laptop or phone, and on those I have my entire collection of books.
• You can loan a Kindle book to a friend on Amazon, and it's free.
• You can read on any device, and you almost always will have your cell phone with you. I usually do most of my reading on the BART or CalTrain, or waiting in lines.
• You don't need to carry a bag or remember any books, if you have a digital collection they're always with any of your devices. If your device is stolen, you still have your digital book collection.