Biden will be 74 years old in 2016. He appears to be taking a page out of John Nance Garner's delusions in 1940 and Alben Barkley's delusions in 1952.
Of course, Garner wasn’t a moonbat, and he also lived almost another 3 decades. He probably would’ve been a good President, too (as opposed to FDR). Barkley, on the other hand, wouldn’t have lived to the end of his term (he died in ‘56 just after he made a Senate comeback in ‘54). Truman greatly erred in 1948 not choosing a younger, viable Democrat to groom to succeed him (perhaps someone like Sen. Warren Magnuson of Washington, then in his first Senate term).