You could argue all those points either way, but the point is that we can conceive of situations in human interactions where people with greater power (such as parents) impose real suffering on others for reasons they can't understand, but that with greater perspective is for the good.
This reminds me the story of the Taoist farmer:
This farmer had only one horse, and one day the horse ran away. The neighbors came to condole over his terrible loss. The farmer said, "What makes you think it is so terrible?"
A month later, the horse came home--this time bringing with her two beautiful wild horses. The neighbors became excited at the farmer's good fortune. Such lovely strong horses! The farmer said, "What makes you think this is good fortune?"
The farmer's son was thrown from one of the wild horses and broke his leg. All the neighbors were very distressed. Such bad luck! The farmer said, "What makes you think it is bad?"
A war came, and every able-bodied man was conscripted and sent into battle. Only the farmer's son, because he had a broken leg, remained. The neighbors congratulated the farmer. "What makes you think this is good?" said the farmer.
And so on...