I so understand. I go through a bag of Sonic ice a day by myself. I keep one at home and one at work. It's the first thing I think of in the morning and the last at night. I can feel my mouth watering when I go to make a cup. I keep a 32 oz cupfull on my desk all day and crunch away. It drives my husband crazy!! I do wonder if I'm anemic. I have been in the past and I know that this can be a sign. But, I'm not willing to give it up. I go so far as to take one of those grocery freezer bags, that they sell for carrying home frozen products, in my car when I know I'm going to be out for a while. I fill 2 gallon sized bags and keep it in there with me in the car. That way I always have it at all times.
It does feel kinda crazy when you think about it, but there are much worse addictions to have!!
So, trust me, I understand completely. I'm with ya!