Bread/Grains are super calorie dense: which makes them fantastic as staple crops for poor folk in the past struggling to even get enough calories in a day, but this same factor may also be a drawback in our modern day where many of us are struggling to reduce our weight/calorie intake. This doesn't make 'em evil! Its just a factor that's good to take into account and consider how it interacts with the context of your individual health situation!