I don't think anything ever "needs" to happen. I don't think it's more positive to have a Twitter account, a Tumblr, and a blog. Someone without those things will use their time to do other things, like read books or swim or talk to their children or read websites or listen to music or write books or lie in bed or sit in a chair. I don't think any of these things are more positive than any other things.
It's great that there are so many different kinds of books for kids and adults to choose from. I think an eclectic reader is the best kind of reader to be, which would be why I was always so satisfied to hear that kids read the Baby-Sitters Club books and then went on and discovered other authors and other genres.