78 is nothing in the modern age, we live longer and better now than we did even ten years ago. I’m routinely struck by how many of my company’s older customers, in their 80s and sometimes 90s, look and are in good health.
It’s also not relevant. Even if I bought into the idea that he’s so frail he’d die halfway through his first term, that’s two years of good leadership that I will enjoy and a good VP, I would hope, to take over.