Explain To Me, Please

Explain to me why it is that people feel the need to take pictures of people and their food. I do not understand. It is annoying for the fellow diners around you. It makes you feel self conscience. It messes with your eyesight. Can people not have a good time out if they don't take pictures of their friends and their food? Is it a way of dealing with issues in their lives? Is it just to get rid of stress from the week? I do not understand taking pictures of your food to put on your blog. I will say that I enjoy getting my picture taken or taking a snapshot or two, but I do not need to embarrass my friends . . . Yeah right! Who am I trying to kid. Take a picture of me and my plate. Any attention I get is good attention.