Spot on here ^^^ for many nicotine==smoking, and for the vast majority of users out there, this is the case. No other form of nicotine use mimics the "dirty way", which makes "our" chosen option different than nearly any others short of a NRT nic inhaler.
I think it would be more accurate to say that for most people nicotine==addiction and "sin" and anything else "bad" about tobacco. Kids start smoking because it's the rebellious thing to do and adults "denormalize" tobacco because they think if everyone believes tobacco is as horrible as they think it is, maybe they won't do it anymore.
Unfortunately, even though those beliefs are core to many people's beliefs--even at a spiritual level for some--it is simply not founded in the truth. Tobacco is just a plant that is frequently used for recreational or medicinal purposes, it is neither good nor evil. Nicotine is a potentially addictive psychostimulant that is generally considered to be the primary chemical sought by tobacco users in exactly the same way that caffeine is a potentially addictive psychostimulant that is generally considered to be the primary chemical sought by coffee users, it too is neither good nor evil. Where it becomes a health issue (and a spiritual issue for those who believe in maintaining their bodies as a "temple") is when the most popular way to use a product involves lighting it on fire and directly inhaling smoke 200+ times a day. Any possible physical or mental benefits from the recreation or chemicals is overshadowed by the inherent health risks of directly inhaling smoke 200+ times a day.
I believe it is possible for an educated and reasonable person to choose to take the "risks" of smoking anytime and anywhere it is not prohibited by public law or private policy, but the practice of chronic chain-smoking is clearly detrimental to health and smokers should be encouraged to switch to smoke-free alternatives.