Personal choice.....
and my choice is to wear one on Public Transport and in Supermarkets etc.
Dirty b@$t@rd$ coughing, sneezing and spreading germs on everyone else.
A big % don't bother sanitising before they go around the Supermarkets, that's before and after.
Some people are walking round with a cough and cold thinking it's the common cold or flu without giving a thought about getting tested to rule COVID out. No wonder it's still spreading .
Wearing a mask may not prevent you catching COVID it will however have an effect on the flu virus giving the NHS a better chance of coping this winter.