I agree with this - I think there is a lot of value in having hard-copies, if just for the ability to walk through the shelves and pick something up. I know most people don't do this, I know it's not cost effective, but I have walked through my University's library and picked up a random book here and there.

It's kind of the same with pictures. Most of the people I know have thousands of pictures on their phone - most of which they will never, ever look through.