You're refusing the "beta" (installed by billions of users) version of something that can save your life because you (mistakenly) believe the choice is between that, and staying as you were before.
It's not. That's no longer true with the Delta variant. Now it's really a choice between "carefully designed, just officially declared stable" vaccine with billions of users vs getting the "totally unstable, totally doesn't care about your health, completely unknown long term effects" SARS-CoV-2 virus forcefully installed on you.
You will get antibodies one way or another, and there is orders of magnitude more risk and uncertainty associated with getting them through infection rather than controlled vaccination.
Furthermore, there has never been in history any vaccine side effect that occurred later than a few weeks after administration at most.
There is just no theoretical basis for why anything wrong would happen here.
Are you demanding 100% certainty ? Sure, you won't get it here but you also didn't get it with anything else you ever did in medicine and you can live with that.
With Delta, ICUs (and even more so long covid clinics) are full of unvaccinated "healthy non obese non smoking relatively young" guys like you.
If you're not afraid of Covid, rationally you should be even less afraid of getting a vaccine.
To put things in perspective, here are the odds in young males for the most talked about vaccine side effect (myocarditis, which usually resolves in a few days), vs the odds of getting severe Covid at your age :