I admire the optimism in believing you can control everything, but I think this is a bit over-simplified, to be honest. There are a surprising number of ways to die, haha. You say you have no idea how you’d die of CVD. Let me give you some. It seems that you are really only talking about atherosclerotic diseases. And I agree, if you start early and look after lipoproteins and blood pressure, most of them are preventable, and soon Lp(a) will be too.
However, you could still have fatal arrhythmias, rheumatic heart diseases, cardiac amyloidosis, myocarditis (including from infections), valve dysfunctions, aortic aneurysms, aortic stenosis etc. And they are from no ‘fault’ of your own, and no diet, exercise or medications will prevent them.
And by the way, you can still have a myocardial infarction for reasons other than atherosclerosis. You can have coronary artery dissections (cause of almost half of MIs in women <50 actually), or artery spasms which choke off the blood supply. The latter can be induced by stress, trauma, etc.
The other thing is, bear in mind that you have something like 20,000 genes in your genome which code for proteins, plus a whole bunch of other regulatory regions (miRNAs, lncRNAs etc). We all have some risk factors for something, and we really don’t understand this stuff yet. For heart specifically you have a lot of options; whether it’s a particular variant of an ion channel (arrhythmia risk), lamin protein (cardiomyopathies), or susceptibility to various syndromes (broken heart syndrome, heart failure during/after pregnancy etc) which seem to hit people fairly randomly. And these are not simple genetic inheritances where if your parents lived to 90 then you’re fine. Oh, and let’s not forget the interactions between those variants, and the redundancies in the system, where you change one thing and a bunch of other things also change in response.
Anyway, I don’t want to be a massive downer, haha. And I think the positive attitude is great. But IMO, we still have a long way to go in making sure that everybody can reach 90 regardless of genes. I did run the numbers using UK data (Quantifying the low-hanging fruit of longevity - #22 by relaxedmeatball), and I reckoned that we could improve average male lifespan from current 78.6 years up to 87 years by addressing 7 simple risk factors (smoking, hypertension, exercise, lipids etc). If we all achieved optimal results, mathematically speaking the average could rise to 92.