If a bad person is hurting people in The Division 2, options to resolve the situation include A) shooting the enemy in the head until they die, B) deploying a turret to shoot them in the head until they die, or C) commanding a drone to shoot them in the head until they die. If a dog is in distress, there is no enactable solution. Like many loot games, rewards do not come in the form of emotional closure, but instead an incremental power bump. Gaining mastery over the world tops the list of priorities, and mastery does not include a genuine display of affection for an innocent living being.
On petting the dog.
From the creator of the Can You Pet the Dog? Twitter account, on the strong opinions people have about petting dogs in videogames.
Also, speaking of strong opinions on dog petting: apparently a large number of videogame animators have no idea how to actually pet dogs. Get some additional training for them on that, stat!