I think it comes from the fear of how we will be preceived. I'm like you I like to control what pictures of me or kept and which are deleted. There are some (most) photos I hate of me. With video there is more chance of unflattering footage. It doesn't make me ill but it sure does bother me.
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Bipolar I, Depression, GAD Meds: Zoloft, Zyprexa, Ritalin
"Each morning we are born again. What we do today is what matters most." -Buddha