It hurts me physically to see my daughter cry. Even worse is being the reason for the crying, which is extraordinarily unpleasant in every way. Makes you feel like a monster, which you are for being the reason a child cries. If you contribute in any way to a fall, like not moving something she could trip over from a path, you feel like Stalin.
Sabrina doesn't look terribly unhappy in this picture. I'm sure neither I nor my wife would have stood there and taken a picture while she was genuinely miserable, and she doesn't really look that pissy so it could be tiredness-based or manipulation for all I know. Yes, my daughter is a master manipulator already, and good for her. She's going to need that later.
I mean it's like having your skin peeled off, seeing and hearing your child in pain. In the running for worst thing ever.