She walks with purpose, all 35 pounds of her. Ignoring everyone and everything else, she zeroes in on a shelf slightly above her reach. Discovery is followed by an audible gasp, and several bouncing leaps."They have it! They have it! They have it!"Thanks a lot, Amazon.The online retailer has already swallowed up record, book and electronic stores, and now it is threatening to take childhood exuberance from us too.I spent a few hours in two Toys "R" Us stores this week, and can promise you, even in 2018, that life is rarely as pure as a child leading a parent on an expedition of Hasbro and Mattel. I can also tell you few things are quite so sad as a dying toy store.READ MY FULL COLUMN.