Earlier quoted context omitted.
You're still not really engaging with my point. A parent sitting next to their kid (without choosing specifically where they are sat) is to the benefit of everyone on the plane. You sitting where you want is to the benefit of you and you only. So it makes sense one has to be paid for and the other does not.
Again, 100% agree, parents sitting next to child should be a requirement. I agree that a child should not be sat away from their parent, because that is a bad time for everyone involved. I just disagree that a child's seat should be allowed to be picked at random by the airline, forcing people to move who DID pick their seat. If an adult is booking a flight with a child, they should be required to book the child+pare…
Sometimes we're so focused on the concept of "fair" that we lose sight of the bigger picture.