I'm eager for Twitter to fail because I think it's been a net negative influence on the world almost since its inception, but it has not seemed realistic to hope that it could go away until now. Certainly, it will be replaced by something, and that thing may be just as bad, but I'm happy for the possibility that it might be better too.
I recall reading an article about the genesis of Twitter, and it included one of the tweets from one of the founders who was tweeting 'just had Ethiopian for dinner' or something like that. My response to that, and to every tweet ever since has been, "yeah, I don't give a shit."
