I think for me it is like with my truck. After awhile you learn all of their little hiccups and noises. Like your vehicle you learn when something is sounding wrong, you learn when the stitches are not working quite right, they become your friends and your confindant. They see your imperections. I have one that doesn't quite work right and my father-in-law was the only one who can seem to get it in running order, but he is gone now so it sits in its case in a closet in the garage. I just can't bare the idea of getting rid of it. It gave me such loyalty for quite a few years.