Medical professionals across the globe are doing just that; trying to save lives as much as possible. It is however very hard to do when you don't have the resources to test as much as we need to. Testing and isolation protocols should have been activated a long long time based on the advice the medical community gave to political leaders across the globe, but here we are. It is true we can't have economies shut down for an extended period of time, it will spell dire consequences for the world economy and mental health. it is very easy to apportion blame right now, but there is no easy way around this because in a sense we are a tad bit late, so all we can do is to save as many lives that walk through our doors.
As for the issue of immunity. Humans are not too great on forming immunity when it comes such seasonal viral infection. The most we have seen in terms of immunity to viruses in this family is 3 years post infection where as some formed an immunity for just 1 year post infection. Unfortunately as the name suggests this Coronavirus is too novel for us to have concrete answers as to how long we form an immunity and how good that immunity is. There are several factors that go into the production of antibodies that help us form this immunity, so for now the general consensus is that people will have some form of immunity but the question is how good/deep this immunity is and for how long does the immunity last. This is all uncharted waters and we are collecting as much data as we can to make informed recommendations as we go along. But it is very difficult when you uncooperative political associates making life harder by dismissing recommendations which would have gone a long way to save lives a long time ago and now.
In short, Testing was very important and still is important, we have found that early intubation and ventilation is key to survival (there are not enough ICU beds and ventilators in the world for that). those drugs being thrown around might mitigate some of the respiratory inflammatory response to the viral infection but they are not curative.
Way forward; if we are able to truly enforce social and physical distancing, the curve will flatten a little quicker, the plateau of the various models will be shorter and the decline steeper. this will mean less strain on us, healthcare, ICU personnel and resources, PPEs, we can open up our ORs for elective surgeries again. less strain on the economy and I can go back to getting railed and shagging my way through Brazil again. i can't fucking do that if i am permanently scarred from wearing those Goggles for 12-16 hours and mentally scarred from intubating and calling families about their loved one that died alone!!! but i digress lol
My two cents but I will let the multitalented experts on this forum make the final call though.