Basically it boils down to this.

At some point the next big attack on America or one of her allies will come and whoever the next President is will be placed in the position of having to make some very difficult decisions in a very short period of time that could have far-reaching implications on the lives and futures of 300+ million Americans, and possibly the world.

When that happens, who would you trust more to make the right call: one of your sweet-talking, slacker buddies from college, or your no-nonsense, ornery old grandfather?

I'll take granddad, thanks. And it ain't even close.