Photography is photography, whether film or digital. Writing with light. Digital is wonderful at cutting costs and helping to share images, but we now live in a world where images have become just another commodity and anyone thinks they have the right to use other folks' work. The profusion of hundreds/thousands of images on a card versus a roll of 24 or 36 exposures gives people tremendous range of action but also cheapens a higher percentage of shots (among non-pros). As we are bombarded with images I think image fatigue can set in, numbing us to spectacular works that will stand the test of time. 50 years from now will we hold in our memories historical images from now the way we respect the works of Ansel Adam, Weston, Bresson, Eisenstadt, Bourk-White and many others? Or will current works be forgotten.
PS obviously replaces superb artists in the wet darkroom, so it's just a change in tools. Video? Meh.