There isn't any danger in wearing masks, other than perhaps a really rare exception of someone who already struggles to breathe.
I am very troubled by what you are saying. You are suggesting people don't understand, even as you repeat the right-wing, anti-science talking points. It is you who do not understand.
Wearing a mask consistently and correctly does reduce your chance of catching Covid, and therefore of passing it onto others. I have loosened up considerably at this point, but I wore my mask everywhere until fairly recently.
There are no real cons. When an airborne pathogen is raging, wear a good mask.