It is crucial that we reach herd immunity as fast as possible. To do that - we should accelerate vaccination. Yes, vaccines can lead to side effects and very very rarely to serious illnesses or death, but statistically these risks are super insignificant. People can die from asphyxiating in a motorcycle helmet while riding a motorcycle because the helmet vents got clogged up, but the chances of it happening are next to zero, so people are still better off wearing a helmet, because it can protect riders in an accident, which is far more likely to occur than "helmet asphyxiation". The same logic applies to vaccines.