If we are going down this route, we should tell people in cars not to wear their seat belts because if they and their passengers weren't wearing one and they crashed they could die - it would make them drive more carefully.
Of course not.
2 points that make the 2 very different.
Firstly, risk of poeple driving more dangerously was considered when decided to make seat belt wearing compulsory. However, the advantages out weight the risk.
Secondly, someone wearing a mask but maintaining poor general hygiene and social distancing, is far more risky than someone doing the opposite.
If there's a really bad car accident, it may impact up to 20/30 people. If those people have their seatbelts on they will benefit from wearing it (in most crashes, obviously people are still seriously injured or die whilst wearing seatbelts).
Those people don't need the person driving like a dick to wear it. Someone wearing a mask, but not using it correctly and not maintaining distancing is a risk to everyone they come across.
Risk, along with H&S works by looking at numbers and working out risk. Not every, benefit outweighs its risks.
As I said earlier, it appears Flu cases were not impacted when it became more mainstream to wear masks in China, other virus numbers weren't impacted either.
If that's true, there no reason to think Covid numbers will drop, because of mask wearing, alone.
I am very dubious of our government. But I am also dubious of the science related to mask wearing. Especially when the people championing the science use it as an opportunity to be smug and to put others down.
Oh and we already have masks. Do has bene making them. Ds has HFA and has always liked wearing them and covering his face. Dp has face coverings for when he rides his motorbikes. So compulsory mask wearing wouldn't bother me at all. We also use masks when we are mucking mums horses out and have done for years, as my chest seemed to be impacted by the hay and sawdust when I was a teen. So I am good to go.
I just don't think its as clear cut as some people make out.