Welcome!
Your story sounds too familiar to me. The much happier part for you is you discovered this and found your way to better advice long long long before I did.
I’m 58
Mother’s father had a lethal heart attack in his 40’s
My father had a heart attack in his 40’s.
At the time of his heart attack, when I was aprox 12, the only advice was to eat low-fat. As a result, my family mostly gave up red meat. I learned, at least for me, if you rarely eat red meat, you feel sick if you have it, so I mostly stopped. Then, for ethical reasons, I became a vegetarian at 25. For decades, I had a low fat diet because fat was bad, but I consumed tons and tons and tons of sugar because those were the Snackwells days that you are probably too young to even know about. But sugar was fine!!! (Oh, how I miss those days!)
My first cholesterol test in my 20s was around 200. I was told I was so lucky because my good cholesterol was high.
Fast forward to mid 30s and early 40s, my cholesterol has never gone much higher than 210-220’s ish, but during those two periods, I had two short experiments with low dose statins and simply hated them. I was even breaking up a pill and taking a fraction 3x per week, but I stupidly said I’d rather just die earlier. No alternative was given, and perhaps nothing else was even available at the time.
At aprox 42, when I asked my cardiologist if I should go vegan because I read the China study, he said your good cholesterol is good and you are not Chinese, so that is not applicable to you (I’d like to go back and punch him 
At some point in my early 40s I had a CAC and it was almost 400. I asked my new cardiologist if I’ll have a heart attack. He said it’s not ‘if’ but when. NICE! :). (I won’t bury the lead, I am still here!)
Then at aprox 50, during my executive physical, my new doc he said he didn’t believe my CAC score and wanted to do it again (I don’t look like a heart attack waiting to happen). It was almost 500.
On how some doctors feel your insides must match your outsides… multiple docs, over a few years, including those at the ER, missed my bad gallbladder (that turned gangrene from being ignored so long!) because I didn’t ‘look’ like I could have a bad gallbladder either.
My doc sent me to a local cardiologist who said you should go on Praluent which was brand new at the time. The problem was he kept putting me off to get free samples to give me. It was scary expensive when it first came out, even if still ridiculously priced. I eventually said, this is my life, I’m willing to pay until you get them. He said there was no urgency and to just wait.
Then, through a very lucky connection, I was able to become a patient of one of the top cardiologists at UCSF. The anger on his face when he heard the last doc was delaying my treatment was palpable. He was upset at the non treatment I had for so long. I’ve been on Repatha since. He also discovered I had an high Lp(a). Unfortunately he is no longer my cardiologist because he now mostly does research and only kept his more interesting cases, sigh. The good news is he thought I was healthy and boring!
I then read my Attia newsletter that talked about colchicine being approved, so I emailed my new cardiologist and he said ‘great idea’… I emailed my regular doc and he said ‘great idea’. I learned my health will be better served if I do my own research, sigh.
Then, I joined this forum and asked my doctor about the oft mentioned ezetimibe, and he said ‘great idea’. And a couple of months ago, I added bempedoic acid.
Over the last decade I learned more about nutrition and now I’m WFPB. Even though my issue is not my diet, I figure why not do everything I can, especially considering I have caused so much damage in the past.
I agree that if you are aggressively doing everything you can and no further motivation is needed, there is nothing to gain from having a CAC, unless there happens to be a happy surprise… but then you might stop being as vigilant, so that has a negative, too.
That was a very long winded way of saying “same, same”!
Yes, and even though I was criminally late to the party, like you, I realize most people never get the medical care we do. And like your parents, my much older brother and sister only got their first CAC last month, 15 years after mine, because they needed someone else to tell them they should. Each has been on statins but nothing else was ever mentioned to them. They only kept upping their dose. Because of me, and that means this forum, my sister is now on ezetimibe
I’ve done the treadmill and tests with contrast etc… everything looks fairly good. I am on rapa
