We may never have all of the answers, unless China ponies up and allows an international panel to investigate the lab in which this virus came from.
Don't hold your breath.
Yeah, some of those answers we'll never know, and some of the ones we do discover, probably won't be for several years, and will still only be estimates and guesses. Which is why "waiting for those answers" is something that won't, and can't, happen.
The sole purpose was to flatten the curve, and the sole purpose of that was to keep the hospitals from being overrun. It was never possible to contain the disease, not after it left its Chinese place of origin.
Areas where hospitals haven't become overrun, must begin the process of reopening. Areas that are still hotspots, should remain more cautious.
And the most at-risk people, must remain cautious for a long, long time. Or, they can make the decisions-- on their own-- to assume the risk. This is a free country, after all.