For others, its about sharing with people that you know that you and your kids had a good time while providing some privacy protection for your kids. Micro-managing who can see what picture is hard, the people that know your kids get the full mental image from the picture.

I have seen some people use these on dating apps where they don't want their own children's or other people's children's faces to be visible. I understand that use case a bit more from a privacy perspective.