The vast majority of things I've bought in the past six years are digital copies of games. It's convenient since they're all practically stored in one place and they don't take up physical space - believe it or not, space is a luxury that I don't have (or one that I misuse and have convinced myself I don't have any).
The last few physical copies of PC games I've bought were Steam games anyway, so the purpose of having the disc beyond novelty was lost.