Personally think it's daft, the virus will spread by touch alone so what's the point?
I'll wear one to make other people around me feel better like, but truthfully I think people are just misinformed. Michael Osterholm, probably the world's leading expert on Covid-like viruses, has said they do next to nothing in terms protecting you from infection. The best way to slow the spread is to simply look after yourself, make sure your immune system is a strong as can be so the virus has no chance against you. That way the bacteria can't survive to infect others.
Anyone who refuses to wear one can get in the bin, but people who do shouldn't think it's some noble act they're doing.