I go with the genes theory. Sure, you can find ways to induce heart disease, but adopting the old Greek motto of "In all things, moderation" should allow you to live as long as you're programmed for.
Strangely, we lost my big sister three months ago to lung cancer. Nobody in our family has ever had cancer. When it was diagnosed two years before, it was already Stage 4 non-small-cell carcinoma. She did the chemo under the care of her colleagues at NIH (ironically, she was a cancer research nurse there for ten years preceding), and that kicked her ass. So much so that when it reappeared six months ago, she chose not to go through it again. In effect, she chose to die. She was a very pragmatic person with a very rational approach to things (even though, Bless her, she was a liberal, and anti-gun to boot)
Co-worker with my exact demographics (white male, 62, no bad habits--boring) just got back to work after an emergency bypassx6. They re-routed six blood vessels in his chest to supply one side of his heart that, apparently, had figured out some alternative ways to get blood via reverse flow in some vessels. Four weeks after surgery, he was hiking up mountains that had made him rest several times before.
Live like you're gonna die.
TC
PS: 280, take care of yourself. Enjoy your newfound health. Tell the insurance company to suck one for me.