Digital distribution vs Hard copy

[Killergran]

Barozi said:

I bought some games off steam, when they made the christmas deals (Probably the only time I've ever seen a game cheaper on it than on retail) and I regret it quite a bit.
I would gladly pay much more for a game when I can hold the copy in my hands and put it on my shelf.

Do you regret it only because you cannot put it on the shelf, or are there other reasons?