I determined early on that I'd need to eventually go no-nic. Mostly because some non-smokers would raise the "it's no different than cigarettes if it has nicotine in it" argument, and that would tick me off!
After 4 months of varying doses (6mg, then 36mg, then 0mg, etc) I finally begin to discern what nicotine's effects really feel like. I discovered it only took 24 hrs before I wouldn't even crave it and going back to it would make me nauseous, dizzy or gave me an instant headache. This, even after being addicted to it for over 25 yrs!
My epiphany: Nicotine's effects aren't enjoyable like adult beverages or candy bars are.
Actually, kicking nicotine was WAY easier than some other addictions I've overcome. I just found a DIY 100% VG flavor that was so appealing, & produced so much vapor, that I forgot I was vaping zero nic for 24 hrs. After that, when non-smokers said "it's no different than smoking", I 'd disagree and they had to admit ecigarettes arfe very different. I no longer have to debate them about why nicotine is less harmful than cigarettes and their last objection (2nd hand nicotine vapor) is removed.
I personally don't care if people vape nicotine for the rest of their lives, but if anyone is leaning towards going zero nic I highly recommend you just go for it. It may take several months of trying different levels & flavors, but if you determine to do it, eventually you can. For those who don't choose to give up nicotine, at least each time you vape you're not smoking an analog, so you're already a hero in my book!