Statistically speaking, he's likely to die before you, both due to the age difference and because men tend to die sooner (by at least a few years, I believe) than women. But you could also be hit by a bus tomorrow and that would be that.

The point I'm trying to make is this: there's a reason they say the only two things in life are death and taxes. And we have no control over when we die, but we do have control over how we live it.