I'm one of those people that nicotine just isn't that addictive for. I've smoked for about 10 years, never tried to quit, but I never smoked more than 3-5 cigs a day at the most, and that was during college. Once I got out of college I cut back to maybe 3-5 a week. Some weeks none. Not b/c I tried to, it just happened, I just never cared.
For me I just love smoking from time to time and I've done cigars, cigarettes, pipes, hand rolled cigs, etc. I just like the action of it, inhaling something into your lungs, tasting the flavor of whatever you're smoking, etc.
I also love trying new hobbies and trying different/new gear in said hobbies. THAT is what's addicting to me. My other hobby is shooting sports. You think PVs are expensive, try switching guns, magazines, ammo, holsters etc for a competition.
So with the above in mind vaping seemed like a cool hobby. So far I'm enjoying it. I stick to low nic juices, 1.1mg or less, sometimes 0. I imagine at some point I'm going to get tired of fiddling with maintaining the gear and that will probably be that.
One positive I am noticing from vaping is that I've cut down on how much I drink. Not that I drink a lot, but I'll have 3-4 beers a few nights a week after a stressful work day. Now I find that I'll come home and vape on those days and maybe have 1 beer.