It is your right not to wear a mask. It's also your right to jump from the top of a building. Simply put, it's stupid not to take precautions where we can until treatments improve and possibly a vaccine is available.
Since masks aren't fool proof, and soap and water are, that's the route I'll choose. If the the greatest medical minds waffle back and forth for months about the effectiveness of a mask, I don’t need to hear much more. Jumping off a roof is a guaranteed outcome by the way, it's not comparable in this conversation unless we want to mention parachutes or nets. Going to the store with or without a mask does or doesn't guarantee anything.