Well, it can not possibly do any harm if we all continue to be careful about hand washing etc. but unfortunately that is no really likely to happen, human nature being what it is.
A vaccine will be available fairly soon, and of course, the virus may, like the one that causes the Spanish flu, more or less disappear again. No-one is making any qualified guesses at the moment.
During this pandemic various treatments have been found to work, and will presumably continue to do so.
I think we should all try to look on the bright side, spreading despondency was considered wrong in wartime and should be wrong now, as well.