Nicotine seems to vary depending on the delivery mechanism. Cigar (not inhaled) do not seem to be addictive at all for most who use them, more of a hobby. I've used the little Swedish "packets" you slip under your top lip and those are like a habit that's hard to break while you have a supply, they become part of your daily routine but I've never had any withdrawal symptoms from them.
Cigarettes by all accounts seem addictive as fuck, I did have one when I was younger, desperately wanted another for about 2 days afterwards, after that the craving subsided I never had another one since.
Conversely, I have never had any urge for cigarettes. Occasionally, I crave for cigars. Snus, however, I crave roughly daily despite stopping around 6 months ago. During lockdowns my nicotine use via snus got a bit out of hand -- at the peak I spent roughly a puck a day (so like 20x pouches of maybe 14mg nicotine a day). I usually stayed up two days straight and slept for the third. Once I woke up, I could not get out of the bed without one. Once I stopped using when I ran out, I had headaches which felt like they crushed my head and put the world spinning. This continued for maybe 3 days. After 3 months of discontinued use, I tried one of the stronger snus brands while intoxicated -- the ones I would not given a second thought while at my peaks -- I became so overwhelmed in a matter of a dozen seconds that I could not walk, and had to lie down and avoid puking on the spot.
And despite stopping, I now have this clear cavity on my right side of mouth with the gums clearly redacted. I only spent snus heavily for roughly three months (which probably masqueraded depression or lack of motivation), albeit, during that time almost at all times and occasionally with multiple pouches.
Overall, I have done coffee at great amounts, tried amphetamines and ephedrine, cannabis in most of its forms, some benzos, and self-medicated myself with alcohol, and I must say the physical withdrawals for me have been worst with nicotine, with only benzos taking the lead on the physiological toplist.
Cigarettes by all accounts seem addictive as fuck, I did have one when I was younger, desperately wanted another for about 2 days afterwards, after that the craving subsided I never had another one since.