My dad is 59.
He lost his favorite brother a few years back to a massive heart attack, and heart disease runs in my family.
He hasn't mentioned it but I am sure that's his motivation for quitting both.
My mom has tried to convince him to stay on the Celebrex but he's quite stubborn, just like his son. ;)
Well, hey, we've all gotta make our own choices, I guess. All I know is that both Vioxx and Celebrex have been a godsend to many in severe pain. Seems the risk ought to be worth it for many, maybe even your dad.
All the best!
MY father inlaw was stubborn too ,he lived his life in pain .