I suppose it would take some time to analyze - but I have this deep nagging suspicion that when all factors are included, we're going to learn that mask-wearing really had a minimal effect.
It's a virus. You touch things that have the virus, then touch yourself (particularly on the face), you're likely to catch the virus. A mask does
nothing to prevent that. Nature has a way of getting around our efforts to prevent/stifle it. That's why God/nature gave humans an immune system - to be infected with viruses to build an immunity against it. That's our defense mechanism. These doctors and immunologists are attempting to create some sort of sterile environment, where no one gets sick. Fauci even said as much, when he said that he thinks we should wears masks and face shields all the time, even to prevent the flu. Someone of his smarts should know that putting up physical barriers can't stop nature from finding a way in. Again, we have a built-in defense mechanism to fight these things. While being sick is uncomfortable, I want to be exposed to these viruses to build up an immunity to it. So, I'd prefer people like Fauci stop telling me that the only way to stay healthy is to create a sterile environment.
The other major factor in being able to fight these things off is to have a healthy lifestyle. Stop smoking. Stop eating shitty foods at every meal. Stop drinking excessively. Exercise. Get dirty when you play, even as an adult. Through these things your body will build a strong defense against disease.
Another factor is -
THERE ARE NO GUARANTEES IN LIFE!!!!!!!!!!!!!!!!!!!!!!!!!!!! You
will get sick. If you are healthy, you will beat it. You
will one day die from something. We are in the freest country in the world. Live that freedom every day until you, one day catch something, and die. Stop being feared into believing you're going to catch something and killed by it, thus being convinced by these 'protector of our health' are going to save us from our own demise. Die on your own terms, not the government's.