Definitely depends on the person. I've heard from many people very similar to you. For me, I quit dipping twenty years ago, and I still get occasional cravings for it, especially right after a meal (which is when I used to dip). It was heavenly, but damn I'm guessing my two-year light habit (one to two dips per day at most, and several days without at times) is going to leave me scarred for a lifetime. Though to be fair, it may not have been the nicotine. It's definitely psychological for me.

Yeah, I think this is one of those things where there can be pretty wild deviation from the mean. One of my uncles quit a 30-year smoking habit about 10 years ago, and the only reason he waited so long was because he had heard for decades how hard it is to quit. However, like you he just stopped one day and that was it.

(My family credits his success in nicotine cessation to having previously kicked a 20-year heroin addiction. It would be interesting to see if you can “get good” at overcoming addictions, or if every substance is different for every person.)

I stopped smoking cold turkey in 2013 and it wasn’t very hard, but I’ve never moved beyond the feeling of wanting to smoke. It definitely does something to your brain permanently.