I highly prefer vaping over smoking. Yet, I do continue to dual use, and here are my reasons for smoking.
1 - Smoking moderately is very very liberating. Didn't have examples of this prior to eCigs. Now, I'm living it. If you would've told me 5, 10, 30 years ago that I could smoke cigarettes all I want, but not be addicted, I would've scratched my head and thought you have no idea how strong those cravings are. Now, I smoke without the cravings. I usually have a half or less at a time, but yesterday I had a whole ciggy for my first time in I don't know how long. Was fairly enjoyable.
2 - Like the (famous) Sottera judgment, I don't filter vaping through smoking cessation. I long for the day when vaping is able to stand on its own two feet and not having to constantly be referenced with (big) tobacco. I smoke because it really does seem like a distinct activity to me. I find it odd that politically, vapers want vaping to be seen as 'nothing like smoking' and yet some vapers see it as intrinsically tied to smoking. As if you do one, you really ought not to do the other. I say bump that, you can do both and enjoy both for what they are.
3 - In my experience, when engaging in other adult activities, a smoke serves as a better go to item than vaping. But truth is, I'll do both and predominantly puff on an eCig cause I'm now so used to it, and almost everywhere indoors I can vape without an issue.
4 - At times, smoking is easier to do. Could explain this in detail, but if you've done both and honestly, truly believe vaping is easier, then I'd disagree. I think vaping can be more fun, but not as simple.
5 - Smoking still seems more social and fun to do when hanging out with friends who smoke. I hang with other dual users. Sometimes I'll join them (outside) for a smoke. Most of the time, nowadays, I do not. I like having the option to go either way.
6 - I smoke for the flavor. This isn't top reason on my list, and closer to bottom of the list, but still is on my list. Vaping flavors are way better, but smoking has a distinct flavor that if you aren't hating on it, isn't all that bad. To me, it is like comparing soda to anything with alcohol. Soda (always) tastes better, but sometimes I get a taste for something with alcohol, and soda isn't going to cut it, even while in general it (always) tastes better.
7 - Smoking is my backup to my backups for vaping.
I'm also compelled to note that I vape around 98% of the time and smoke 2% of the time. Vaping has knocked out the cravings for smokes. I've quit cold turkey previously, and so know what it is like to be without (constant) cravings for smoking. I like that feeling, a lot. Hence the reason I put moderate smoking at top of my list. I highly prefer vaping, but am glad to have option to do either whenever I so desire.