I think there is a mix-up between wanting to smoke and wanting to quit. These are not mutually exclusive. Most smokers want to quit, and most smokers enjoy smoking.
I always recommend to people NOT to quit when starting out vaping. People will end up consuming the same amount of nicotine, but spread it over the two, meaning the smoke less and gradually go to all vape when they are ready. Certainly some people can go cold turkey, but its not good to put pressure on people, but instead let them enjoy the ride. If their setup is correct, they will not want to smoke in the first place.
I've gone back and tried a couple cigarettes in the past year. I don't miss it, in fact its extremely gross. Perhaps a fair comparison is licking a tootsie pop and licking a muffler