I went through 50 years of my life without hearing about myocarditis also. Now I know 2 people who had this and both are in 40s...
“...without hearing about myocarditis also. “
Well, I got it post-vaxx (1-Phyzer and one J&J). The only good news is by my reasoning myocarditis from the J&J lasts 9 years. That’s how long it takes for the modified/infected cells, which are pumping out spike proteins, to die off. From my slowly and steadily declining symptoms I think the 9-year estimate is accurate.