It's interesting that people still hold on to perfection, otherwise it's worthless.
Nobody said that masks stop all viruses, but they very much do reduce the amount that gets through. Viruses stay with the drops that come out of your mouth, and thus stick to the mask on the way out. And on the way in, there's a combination of drop encapsulation and static electricity that reduces the amount of viruses that make it into your body. Again, once people figured out what needed to be filtered, it's not hard to come up with masks that work. Yes, some coverings are less effective than others- but even 30% reduction is better than nothing- and could easily lead to a high enough reduction to prevent infection.
One virus cell isn't going to infect you. It takes thousands. And if you can prevent that, there you go. There's plenty of data out there that clearly shows that.
Combine that with keeping your distance is a clear improvement in means to prevent spread.
And preventing spread keeps people alive.
It's too bad that we did not keep the virus out of nursing homes, as we surely could have. Preventing all of those deaths. We CHOSE to not act. This administration took apart the system in place to reduce the impact on viruses like this. And now we are dealing with that- seeing over a hundred thousand American citizens die when they didn't have to. It's amazing that we pretend that there was nothing we could do- even after we already knew what to do. Heck, most of the actions were talked about on this board back early on. Yet we chose to not do anything.
Test, track, isolate, test, track, isolate, and the virus spread could have (and still can be) prevented. It's not hard. And it certainly would have had a MUCH more minor impact on the economy. No question about that. How people think this was unavoidable- where we are now- I just don't understand that.