People make a very odd distinction between "physical" addiction and "psychological" addiction. I don't understand why, but I suspect it has something to do with

People make a very odd distinction between "physical" addiction and "psychological" addiction. I don't understand why, but I suspect it has something to do with "morals" and "strength". When its "just psychological" you'll see a lot of people who treat it as a personal failing, rather than an actual, difficult thing. Much like people treat depression and other mental illness.