<p>My Mom gave me her Kitchenaid because it was difficult for her to use. She had trouble changing attachments-you have to push in and twist. She also had trouble unlocking the bowl. As others have noted, the unit is very heavy, and she was also having trouble moving the unit to the up position. She has lost a lot of height due to arthritis, and has also had shoulder problems, so it was getting hard for her to reach.</p>