www.insider.com/face-shields-did-not-protect-people-from-coronavirus-swiss-outbreak-2020-7
Pointless to say we should have worn them in March- we can't turn back time.
All we can do is look at the evidence which has stacked up since March and make an educated decision. I think the evidence is that masks do both protect others and protect the wearer. But this is not controlled trial evidence, just observational evidence like the Swiss example above.
I think face shields are useless, because they don't come down far enough over the chin and people wear them tilted up.
You don't necessarily need face masks to be worn perfectly or even disposed of perfectly to make them a reasonable health prevention measure.
I'd feel better if my students at uni were going to wear masks in Sept!
I hated them to start with, but you get used to anything, I have and I went out yesterday with my dd shopping and eating out and we had a fab day, people seem more relaxed out shopping/staff seem happier, I think over time it's become fine for me.
In winter they will be quite warm and toasty.
It's a choice still, though, you can choose online delivery and to never go places which require masks- we are doing the opposite, we are taking the opportunity of the summer, the nice weather, the rates going down to get out as much as possible, and so are my friends, several of whom are going abroad, some also in UK- no-one I know is just sitting in moaning about masks, they are posting pictures from holidays and stuff like that!