78 seems so young to die. I suppose my family is lucky to have good longevity genes and disciplined enough to live fairly healthy lifestyles. I have 3/4 grandparents still alive and relatively healthy in the mid 90s and several great and great-great grandparents lived past 100 even at times when that was even less likely than it is today.

I do expect there's going to be some revolutionary enhancements to human longevity over the next century. Not as optimistic as Kurzweil, but perhaps the oldest old will shift from ~120 to ~150 and the median from ~78 to ~100