>I quite like the taste and mouth feel of the smoke but the nicotine itself is a bust. Perhaps a very mild caffeine-esque feeling at a push? It hasn't proven addictive as it's been sat out in my car untouched for the past four days!

As someone who stupidly started smoking later in life, that's pretty much how it goes. Nicotine addiction isn't like on TV where you smoke a cigarette or puff a vape and suddenly you're hooked. It's a slow process you find yourself doing more and more often until you realize one day, it's every day all the time.