I find it fascinating the number of people who seem to follow this reasoning, but don't think it's more likely that having covid-19 will cause long term problem

I find it fascinating the number of people who seem to follow this reasoning, but don't think it's more likely that having covid-19 will cause long term problems years->decades down the line. Chicken pox causes singles, a number of viruses are associated with various cancers, but you think it's more likely that a carefully engineered and studied vaccine will have negative long-term effects than a novel virus?