Biden keeps saying that personal or emotional issues are preventing him from deciding whether to run or not. I think that's BS. Biden made a decision months ago: he will run if Hillary is indicted or so severely damaged by scandal that she's unelectable. As long as only Republicans and conservatives are following the email issue closely, Biden doesn't want to risk his own reputation and the wrath of the pro-Hillary DNC by running. As the unofficial backup candidate, he will only run when he's given the green light to run, i.e. if and when the DNC cuts its losses with Hillary.
It does all seem like a cynical backstabber uniparty manipulation to force-feed us hillary vs Jeb, or a fill in they approve of.
It's one of the reasons I'm so strong for Trump. Do those supporting the others even realize that they're part of a game?
That's my take, anyway.