I have had my kitcken aide for 17 years use it at least 2-3 times a week, never had any problems. the only time you can really ruin them is by using it to grind meat, and stuffing sausages, thats when you load it up. if that is what your going to do, buy a sausage type machine. I love the thing. get a second bowl for it. makes things easier for the ladies when doing cakes and such. you wont be sorry with your new purchase. happy holliday