My goal all along was to eventually quit vaping too, and so far I'm right on schedule. I started with 18gm, went down to 12 after about 9 months, then down to 6 after 6-9 months, then 3 mg and I just went to 0 nic a couple of weeks ago. Originally, I planned on stopping vaping at about the 3 year mark and this July I'll probably stop.
Why? As someone else mentioned, I just don't want to be dependent on something. Also, it costs money which I could spend on other things and sometimes it's a hassle : making sure things are charged, having juice, changing coils, carrying around a bag of stuff, etc.
It's not burdensome, but it can be a hassle.
Yes, I enjoy it, but I'd enjoy fewer hassles and having more disposable income more.
I might keep a pipe handy to vape on weekends and such, but don't want to be vaping every day, all the time.