I agree we want to change outcomes, and flattening the curve is part of that. Delaying infections until better treatments is part of that. But we can't commit to waiting for a vaccine, and we can't commit to waiting for a good treatment. We may never get either.
What I think is that we sorta can and sorta should; we need to figure out the trade-offs, as best as we can, and decide what measures we want to keep for another year (will vary by country/state/city).
If you estimate that the lockdown takes 50% of life enjoyment away and each of us gets 50 healthy years of self-directed adult life, a year of lockdown is equivalent to sapping 1% of total life enjoyment. That’s not exactly the same as 1% increase in population deaths in a year, but it’s comparable IMO.
For now, we want to drastically change the outcomes; for example, a month ago, you would have been given chloroquine, which doesn’t help but has side effects; maybe in a month we would know about therapies that reduce mortality and long term effects by a significant percent (or maybe not :)
Tons of testing and contact tracing would probably let the US end up with fewer people infected.