I already downloaded all my youtube vids from my channel because I assume that one day I screw up and they'll be connected or Google will just force the connection; thus my real name will become discover-able from my youtube channel. If that happens, I'm reuploading to some other video site and closing the youtube channel.
And I can only hope that when I do this closing, I don't screw up and lose my gmail in the process... because that would truly anger me.