I’m sorry about your father, BG. Watching someone die from cancer is one of the most devastating experiences, IMO.
Quite frankly, that’s why I don’t do anything for some heart, cholesterol, and blood pressure issues we have in our family (also genetic). A debilitating stroke would be horrible, but one that takes me out in one fell swoop would be welcomed (though strokes don’t run in the family), as would a good, strong heart attack.