To the OP. Don't start nicotine because you like the buzz. That will go away very soon and you will probably never feel that again, so don't get your hopes up.
I've become convinced over my years of switching between
vaping and smoking, that a large part of what keeps us hooked on cigarettes is many many other chemicals. I've called it the "carbon monoxide buzz". Otherwise there would be NO reason to have any difficulty trading smoking for
vaping. Even at ridiculous nic levels vaping (up to 60mg for me, at low wattage) I have a hard time quitting smoking completely. I think I'm really addicted to benzene and formaldehyde, or some other nasty chemicals.
BUT, do NOT start nicotine if you haven't smoked.
As far as that government report referenced above. I just don't buy it. I'd need to see more. Convincing me that nic is not addictive would be about as hard as convincing me the sky is not blue.
One point though, I've read that some people have a particular liver enzyme that reduces that individuals propensity to actually become addicted to nicotine, or smoking. I believe this because of the people I know who are light smokers and can quit at the drop of a hat.
I was a very light smoker -- pk a day or less, of ultra-lights, for 20+ yrs of the 39 yrs that I smoked. But I
could not quit -- until vaping came along, and I quit very easily, using 6mg nicotine. I wasn't using WTA, my first go-round, but it was still very easy, at a very low nic level -- I think because of a) the substitution of the behavior, and b) the pure novelty of being able to go without smoking and not suffer for it. But it certainly wasn't the nicotine that eased the process -- I've tried the patch before, and it did NOTHING for cigarette cravings; all it did was give me heart palpitations, nausea, interfere with my sleep, and essentially make me psychotic.
After my post-appendectomy relapse, I came back to smoke-free using 10mg... and still suffered such ungodly cravings, I had no choice but to add WTA -- because I could not vape a higher level of nicotine without extreme nausea. Once I added the WTA, the cravings COMPLETELY VANISHED. Since April of 2015, I reduced that 10mg nicotine to 5mg, and barely even noticed it was happening, except the TH got lighter. Since January of 2015, I've reduced my WTA percentage from 10% total volume, to .7% -- but after every drop, dropping by one percentage point or less, for about a week, I felt like I just could not vape enough. I felt depressed, angry, out of sorts.
The addictive drug is NOT nicotine. It is all the chemicals that are in cigarettes that go along with the nicotine, that reinforce it, that speed it helter-skelter to the brain, that make the nicotine more potent and efficiently-delivered. And yes, also the toxins in cigarette smoke, to which one becomes habituated; some people perhaps become SO habituated, that they miss those toxins when they're gone.
But you're right about one thing: once one acquires a tolerance for a certain level of nicotine, the dizziness provoked by that quantity of nicotine goes away. That does NOT mean one is addicted, it means one has a tolerance; there is a huge difference between the 2 states. Addiction means you will lie, cheat, rob, assault, mug, steal from your grandmother, blow off your job, your spouse, your kids, to get the substance you need. Tolerance means it no longer makes you ill -- or dizzy. But if you go beyond the level to which your body is tolerant, it will still make you dizzy -- even when I vaped 10mg, 12mg made me dizzy. And right after that, nausea.
Andria
"Here are some facts... but I stand by my opinion which is completely contrary to the facts because.. well... it's MINE!" 
