Why Catechism?

If you were placed before the question why you attend Catechism you might answer quite readily, either, because I must, or, because I enjoy it, or, because I consider it very important. It might be better to put the question this way: Why do we have Catechism? And if that were a question in your Catechism book the answer would read something like this: To supply the religious, ecclesiastical and spiritual training of the Covenant youth of the Church. I grant you, that is quite a mouthful....