In my own opinion, if COVID-19 will start to spread and make a vast number of cases again, I assume that there will be a massive riot in every country because a lot of people will die in starved due to losing their jobs and businesses getting bankrupt. That is why scientists, doctors, nurses, etc. are doing everything for them to provide a vaccine for COVID-19 to prevent this kind of situation from happening.
Yeah at the moment humanity (us especially) are doing leap of faith - soon enough a lot of people will be ill again and its only a matter of time when next peak will occur (imo obviously)
so if scientists,doctors,nurses etc. will provide a vaccine just in time humanity will be saved and so will be our economy