So the feelings of the people who don't want to be photographed (and for whom it is a big deal to be forced to do it, whether you believe it or not) don't matter. The feelings of the people who want the photos do matter.
My example of my MIL, who hates being photographed, is a model of how this can work out. She hates being photographed, and we value her comfort--however, we also value having photographs of her. So she and I and everyone in the family bends a little. She allows a couple photos under her conditions, and we mostly point our cameras elsewhere. Life is going to be full of negotiations like this for every child/teen/adult-- one can't always get one's way-- and would they be happy if they could? Flexibility is key to having good relationships.