I'd like mine better if they didn't complain so much. The left knee is still mad about that bone breaking fall ten years ago, and the right one is sick of taking up the slack for the whiny left one, and every time I go from sitting to standing they act like they completely forgot how to do it for a few seconds. Still they keep on taking me around the house and through the stores, just so I don't ask them to vacuum and grocery shop on the same day. If I do that they keep me up all night griping about it.