I watch a TV show called Lockup and I heard a woman on it talk about her addiction to a certain drug. She said she didn't miss the high but she missed the experience. She talked about how the experience of lighting up and watching the smoke building etc. It was like hearing someone talk of a very fond memory. It was really sad to me because I knew that if she got out of jail she'd end up right back there because all she associated with the drug was positive memories. Really unfortunateAddictions are strange and complicated. I have known heroin users who could stop on a whim, but were right back when under stress.
Another who had smoked 2-3 packs of cigarettes a day and could quit the nicotine but not the physical habit.
Of course these are outliers, not discounting the horror of those physically addicted to a chemical. Just saying there are personal variations.