Because it protects you for the time being. It isnt a game of catch where you can get it back quickly. It cant change that fast. Nor does it guarantee that you arent gonna get it again because it changes over time. If you get your vaccines, it can protect you short term and when everybody does it, wears a mask, and cleans theirselves sufficiently, it becomes near fucking impossible for somebody to get it again, or at all. But since people dont want to listen, and act like proper people, they are going to keep this going for what could be a very long time. This pandemic should be over by now. I should be able to exercise with my friends without having to worry about wearing a mask. But until people are willing to deal with a few "rules" then we wont be getting anywhere soon. Wearing is caring dudes!