As I understand it, we're buying time. A vaccine will probably be available in a year to 18 months. The health care profession will get better at treating the disease. Meantime, we're trying to reduce the strain on the system so that people don't die while we figure that shit out. If what needs to happen is that everybody needs to get the virus (for generous but not absolute values of everybody) it still makes sense to have it happen a little at a time. A steady stream of sick people is much more manageable than a sudden spike. But, mostly, we're trying to buy time because there is so much we don't know. The reason there isn't an endgame is because we don't know enough, yet. I mean, I suppose the endgame might be 2% of the world population dies. I do hope that's not it. But at the moment, we're trying to buy time.