I view this as a healthy development. A real checking account is useful, and I can't afford to keep paying three percent a month to someone who babysits. Children are instinctive capitalists. If given enough leeway, they quickly become shrewd managers of their own finances. When parents fail in their efforts at fiscal education, it's usually because for reasons of their own they have managed to make saving seem punitive and dull.
Money is fun, and it's almost entirely self-explanatory.
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