If you don't wear a mask there is literally nothing between what you breathe out and what someone else breathes in.
If you do wear a mask there is something that may stop some of what you breathe out and someone else breathes in. It won't stop everything - we know that - but it may stop enough to give someone else a better chance if you are carrying the virus.
Why, if you can, would you not wear a mask in the small number of places you are recommended to do so? You may literally save someone else's life. Why would you not do that?
If you do wear a mask there is something that may stop some of what you breathe out and someone else breathes in. It won't stop everything - we know that - but it may stop enough to give someone else a better chance if you are carrying the virus.
Why, if you can, would you not wear a mask in the small number of places you are recommended to do so? You may literally save someone else's life. Why would you not do that?