Raising children is perhaps the only job where by the time one becomes experienced, he's out of a job. Even the best of intentions and the best plans sometimes end up with the wrong results. Marc figured that when it came time that they were earning money and they were obligated to give a tenth to tzedakah, that it would seem like a real bargain. I was so impressed with the idea that I decided to try it out on my five year old, Elimelech. Rosh Hashanah is the Day of Judgment.
Life is serious business.
Every action has its consequence. If G-d didn't judge us then there would be no justice in the world. From our perspective, if we feel that we are being judged, we are more likely to treat life seriously. We will then hopefully correct our mistakes in dealing with other people, ourselves and with the Almighty. Judgment implies caring.