[svandamme]

Sucks but at some point , how old is your dad.
perhaps he has decided he's not going for the super high age because of other reasons?

for instance in my family we all go senile at 80, by 90 we are completely gone in the head.
I for one wanna be healthy as possible til labout 75 and ideally drop dead from a coronary or a full on absolute killer stroke.

if your dad is otherwise coherent, I think at some point you have to respect his choice, no matter how hard