One of the most important reasons for using the 1 Rule with your kids is that it ensures that the love you are feeling for that child reaches them. They FEEL loved. Their love for you reaches you and you feel loved, too. By using the 1 Rule you create a bridge between hearts.
There are so many other good reasons to use the 1 Rule...like creating harmony, peace, respect, cooperation, good self-esteem, learning, practicing, mastering valuable life skills...to name a few.