I'm with you, I started this journey with my wife, so that's one less person. My parents are the same way too, I tried to tell my brother about it, and "he'd look into it". He's been on statins for years and only 39 years old!
Unfortunately, their diets do nothing but harm them. As much as I'd like to, I don't discuss it with anyone, unless I'm asked directly. I decided to get my cert as a personal trainer because of this lifestyle, maybe I can bring people in that way.