Don't get me wrong, I've bought any number of things digitally, but it'll never be my 'be all and end all' and those things were all cheap. We've already seen companies from the smallest to some of the largest refusing to fix games that should never have been released in their current state. Games that have been deleted after purchase meaning you can never download it again. Books removed from Amazon itself and Kindles. Zune
I'll never amass a full-on digital library the way I have with games and books and so on. I'd sooner do without, but then I'm maybe lucky to be in that position.