So the worry would be not that he was a sleepy old man, but the reverse.

There'd be something to say for having a sleepy old man in charge. I remember people used to joke about Eisenhower liking to goof off and play golf.

One thing about politicians is they seem to age differently in public perception from the rest of us - people are going on about Obama being so incredibly young. If he gets adopted as Democratic candidate by that time he'll be 47, not exactly a teenager. Middle-aged in fact.