Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Why would you want this?

Somehow my parents manged to raise me into a healthy adult without one of these products - their parents raised them through a war and rationing - and so believe it or not my wife and I have raised our children without even realising that such a product could exist - just think - save energy - save resources - give your money to charity or spend it on a book rather than on this nonsense...