Rich Alderson wrote:
  Never discard the paper just because you have
converted the information
 content to an electronic or chemical form. 
Easy to say when you work for a billionaire.
Storage space costs real money, and the payments never stop.
I know people who have lost collections because they couldn't
afford the rent to store it. I also know people who are out of
work in the valley right now who are downsizing their collections
to be able to survive.