I heard that when cameras were first invented, some cultures rejected them because they believed they were stealing their souls. Sounds like some silly superstition but I have a feeling that what both them and you are really worried about is the fact that people looking at a photo of you are only seeing a small slice of your "soul" or personhood disconnected from the social interactions that would normally occur if they were looking at you in real life. So it's more a worry about losing control of your influence over how other people perceive you, which is a major part of being human.