Because I'm using my entire savings to pay for them and they aren't guaranteed. I'm getting porcelain permenent ones and they can crack. I won't be eating whole fruit anymore. Except maybe blueberries?? Plus my whole mouth aches now. My gums, my upper gums where the teeth were numbed/placed. I think it's giving me a headache. All my upper teeth are aching bad. They never said that this would be a side effect once the novacaine wore off. Guess I need some tylenol. Bottom line I'm broke and in pain.