A *shoebox*??? I have a tall cabinet that's over-filled, and that doesn't count the many negs that "disappeared" when I got divorced nearly a decade ago.
Digital is not going to disappear. It's not BAD, quite the opposite. But it has its own character. There is space and strength for both.
Storage is a bugaboo for digital -- a stack of CDs is harder to sort-through that a binder full of negative pages. It needs more long-term maintenance too.
(currently torn between buying a 14mm lens for his digital EOS or a 21mm for his 35mm Contax...)