You are not alone on the ice thing, hence the name gimme ice. I dont chew on the ice only because I dont have any teeth so now I just hold it in my mouth. Right now it's not as bad as it used to be at one time I was going through nearly two twenty pound bags a week now I am down to one 20 lb bag a week. Mine is definitely OCD but I had to have some medical tests run to make sure that my iron levels were okay and some other blood work because I guess craving ice can be a symptom of something serious.
Feel free to private message me anytime, I have a lot of experience with ice I have really been battling the ice cravings for nearly four years.