I still smoke "occasionally," but it sounds like I do it more often than you, OP. I've been mostly a social smoker too. The worst I ever did was 2 packs in one day. I was driving home from Oklahoma. I was there for a few weeks and couldn't have a cigarette the entire time, so as soon as I left, I went to wal mart to get some food and water for the road, and I had to pick up a pack of cigarettes. It was a 26 hour drive. Smoking gave me something to do in the car, as I did it in one straight shot for the most part. I TRIED to stop and sleep at a rest stop, but it was way too hot and humid to be comfortable enough to sleep for very long. By the end of the trip, I'd gone thru two full packs, and I was tired as hell.
Other than that episode, a pack could last me anywhere from one day to one week. I've been vaping for about 3 months, and in that time I bought maybe 4 or 5 packs, which is a LOT better. I still bum smokes from friends every now and then, but not nearly as much as I did before I started buying my own, or even when I was buying my own but ran out. I still enjoy a cigarette sometimes, especially if I'm drinking. But most of the time, I vape. I love the flavors, and I love how I can get ginseng in my juice. I use that in the morning or when I'm starting to feel drained throughout the day. It's not like an energy drink or a cup of coffee, but it does help keep me going.
My girlfriend tried blu, and she liked it at first, but she finds that e-cigs make her cough more than regular cigarettes. I think she just needs to learn how to drag on it correctly and find her comfort zone or whatever, but she's given up on them. However, she has cut back her smoking quite a bit. She used to go thru 2 packs a day, now she's down to about one. E-cigs sort of helped in that, but as far as I know she's still at that same level of smoking without the help of e-cigs. I now have a joye 510, and I let her try it too, but she doesn't like it any better than the blu. She didn't like the short battery life or the cart size of the blu anymore than anyone else, but her main complaint was that it makes her cough. That, and I guess she can't go without the extra crap that's in cigarettes.
For myself, I've noticed that the more I'm around people with cigarettes, the more likely I am to want one. If nobody has them, then I still get slight cravings, but I usually just shrug them off and puff on my 510. One of the main reasons for me switching to e-cigs was the cost of real cigarettes. They're just too expensive for me to keep buying them. I've probably spent just as much on e-cigs in the last 3 months as I would have on real ones, if not even more, but now I don't need any equipment or juice for a while. I'm still eager to try out some new flavors, though. I know that in the long run, this is better for my health and my wallet as long as I don't go nuts buying stuff. And I see no reason to for a while, other than juice, but I really don't even need more of that either.