I successfully reduced caffeine to zero a few times before (usually after reading posts like this). I didn't quit cold turkey though, I gradually tapered it off

I successfully reduced caffeine to zero a few times before (usually after reading posts like this). I didn't quit cold turkey though, I gradually tapered it off over couple of weeks. No withdrawal effects at all. If you consider caffeine very addictive, use techniques developed for fight addiction to addictive drugs like benzos.