The biggest one I've seen is that, even assuming everything is on the level and the product works as advertised, you're still injecting yourself with genetic instructions for making your body produce a pretty toxic protein, which, stripped of technical jargon, basically destroys any tissue it comes in contact with, and lasts in your body for up to but not necessarily limited to 8 weeks. We know this product doesn't remain localized at the injection site, we know it tends to concentrate in a number of very important organs, and we know it can cross the blood-brain barrier.

Look at increases in all-cause mortality worldwide as they relate to the rollout of the vaccine. Each time you consent to this treatment, you're flooding your body with a toxin that's likely going to exacerbate any medical conditions you already have, worsen any underlying condition that you may have developed naturally years/decades in the future, and/or create an entirely new problem. And all while not protecting you from catching or spreading the virus it was initially advertised as preventing.