I bet your dinnerware is stoneware, which is the least durable of materials typically used for plates and bowls. So 25% cracking sounds about right, based on my own experience. Several years after getting 13 place settings of stoneware for my wedding, I think we were down to three plates -- three out of 13. That's just from normal usage/wear and tear. One little chink/bang into something and the bowls and plates cracked and chipped very badly.

Oddly, macy's website claims that it's porcelain, but I bet it's stonewear. And for the price, it's definitely at the cheapest end of the scale.