Exactly. For parents in the past, this was really just about common sense. For some reason, a segment of our society has decided that young children should be encouraged to make profound choices about their lives, despite the fact that it should be clear to all but the most mentally challenged that this is absurd.
The concepts of an age of reason, age of consent, age of legal adulthood, etc. are not arbitrary restraints. Just as a person's body grows, so does their intellectual and emotional capacities. Children are naturally incapable of making certain decisions and it doesn't matter what their IQ is, they simply lack the experiential knowledge that is required. People are born with an instinctive fear of falling, but everything else has to be learned over time.