Why do some people refuse to wear masks?
There are many reasons. A common one is that we should have the freedom to decide this for ourselves and the government should not be able to force this on us. Compare this to a discussion about stopping at red lights. "The government should not be able to force me to stop at a red light. I should have the freedom to drive through a red light if I want to."
This makes no sense. Why? Because of the risk -- the danger -- that an accident might occur. The driver might get hurt or their family (if they are in the car) or others, if there is a collision. Why can't we apply this logic to wearing a mask? Failure to wear one can hurt the person being exposed, can hurt their own family if they get sick and bring the virus home, or can hurt others.
PLEASE WEAR A MASK. YOU WILL SAVE LIVES. PERHAPS YOUR OWN.