When they are older, they play all sorts of games which cause all types of trauma and then before long they are involved in sports. What is really critical is that children have certain windows of development that are often only open for a short period of time. This is directed by the neural system which is actually the first system formed in development. If this neural system is being interfered with from subluxation you are limiting your child's potential. This is about having the best for your child.
Some cases are very severe, however how about a case where the hips are uneven.
I know safety is an issue for you. An adjustment for a child is a tiny light pressure and the child can go on with his life. Children usually need fewer adjustments as they do not have the years of damage. Also, please realize your pediatrician has no training in Chiropractic. By all means, he will address your medical concerns however you can not expect him to evaluate baby teeth or a subluxation.