Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Why would anyone buy one of these?

All I can say is the people who found their machine fantastic must have purchased a different unit than the one I bought. I specifically wanted this for carpeted stairs. There is no suction at all so the carpet is sopping wet and I had to use other measures (Turkish toweling) to remove enough water to be able to use the stairs in a reasonable time period. The stairs also got dirty faster than ever after I used this product. I am VERY disappointed and would not recommend this to anyone. A bottle of Resolve rug cleaner, a little elbow-grease and a towel do a much better job!