I don't buy that Eve. There are a million little things we would all change about ourselves. Who doesn't want to be just a few inches taller or a few pounds lighter or just a bit smarter or more athletic? If your parents could give you any of those small advantages in life would you really be upset because it isn't their decision to make? I doubt it. When you are struggling to order the salad instead of the pizza I know you wouldn't be thanking your parents for not giving you a faster betabolism.