I no longer have an account on any major social media platform. other than a Wwitter account I use to keep track of news related to my work, but never post to. My stress level went down, and presence in the moment went up, when I dropped them all. I only take pictures of my wife and my cats - ok, maybe a guitar once every few months. The time I spend with my friends (in person) has gone up sharply. It's been a great move. But that's just my preference. I don't mind people taking a picture of their food. Doesn't bother me any. But no, I wouldn't do it, unless it was a favorite item/restaurant of a dear friend or something, and I wanted to use it as a reminiscence.