A 0.002% risk of experiencing myocarditis due to the vaccine seems a better deal than catching COVID, which brings a ~0.3% risk of experiencing (symptomatic) myocarditis in a (to my non-expert understanding) similar demographic[1]. Many experts assume COVID will become endemic, so this is not a theoretical risk.
[1]: https://jamanetwork.com/journals/jamacardiology/fullarticle/...