I support imaginary play, and creativity--- and well Santa the fairies, the tooth fairy, and the easter bunny is all a part of that. My son is 5, soon to be 6 and there will be a natural progression to knowing they arent real. In the meantime I don't think there is anything wrong with extending a bit of this childhood wonder for a spell. I know a mom who told her daughters simply becuase she didint want Santa getting all the credit.
