I'm prepared. I own a 10tb hard drive that is half-filled with YouTube videos I've backed up. That's 13,000-odd videos in 360p, all raring to go once YouTube bites the dust.
Defending YouTube because we're afraid it will "go away" is the same Stockholm Syndrome that paralyzed people on Twitter for so long. I welcome a change that forces people onto more P2P-oriented services, the status-quo is obnoxious and unsustainable.
Good question. Youtube is convenient central repository of videos, but if it didn’t exist I imagine people would just use google to find videos on other video hosting sites.