I am sure that is the case, but it is not the universal truth, there are others who enjoy seeing children. I for instance am blessed, as you put it, not to have children, and, inevitably as a former teacher, my default position towards children is fear and loathing (exaggeration for effect), but I am always charmed to see the well behaved children on Cunard.
However, I can appreciate the shock of a friend who found himself on a crossing with about 300 children.