Picasso once said that the purpose of art is washing the dust of daily life off our souls. The dust of daily life, is no more than tiny particles of skin, which if left unwashed, would cause us harm. We need to keep our souls clean. So I would let the children see art, no matter what a self seeking publicist, Jake Chapman, who pretends to create art, may say.
The soul of a child is fragile and must be kept clean; the souls of older people need deeper cleansing, and often art cannot wash clean enough for them. Of course, art which needs to be explained by words, is not true art buy artificial or pretended art and does not clean at all, but rather rubs the dust into the soul.