We've had to fill out a couple of forms recently, for DS's preschool and for church. Both times DH ticked No on the box about giving permission for photos of children to be used. I think he views this as an extension of the "please don't sell my details to random companies" boxes. He says that he has no reason to want DS in public photos.
I see it from the opposite view - that the boxes are there to protect people who actively have a reason to not want their children in public photos. And that DH ticking the boxes just causes a PITA for preschool and church, because someone then has to check that the photos they want to use don't have DS in them. AIBU?