For me, it's very simple. When the medical EXPERTS, those with education and experience, tell me to do something, I do it. If they want to give me advice on replacing brakes or how to bale a cake, no thanks. If they want to dip into my area of expertise and give advice, no thanks. They want to give me advice from their area of expertise as to how to avoid getting or spreading a pandemic virus, I'm taking it over the advice of angry internet posters. I don't care what some of the doctors may have said months ago at the start of the epidemic. It's quite easy to wear a mask and maintain social distance and I'd rather err on the side of caution. You can't reverse the time to wear it after Aunt Tilly drops dead.
Oh, and spare me the political talk. I'm pretty darn conservative.