My dad is 79 years old today - went over to the west coast to celebrate a bit with him; thoroughly enjoyable day all round.
He really is in great shape, with all the statistical averages indicating he should have been dead well over a decade ago ... working class manual background, long-term heavy smoker (gave up when he was about 55 thankfully!), west coast Scottish diet (spent 22-years away in the Army thankfully!) ... but probably most important of all, he's living happily with the same partner he married nearly 54 years ago.
Poor woman ;-))