Yes, there will be many many who recover.
But there is also the risk of more extreme side effects than the usual flu-like symptoms (mild) or completely asymptomatic.
So the question is, do you want to roll the dice and find out if you're one of the unlucky extreme side affected folks?
I think we need to do more analysis until we can figure out WHY and WHO are seriously affected by this (ie blood type O, or certain co-morbidities like High Blood Pressure / Diabetes, etc).
Then it'll be less concerning. Until then, you can't blame folks for being scared.