Nicotine is chemically similar to caffeine. They make cessation aides such as gum and patches where one can get just this chemical. I agree it’s peculiar that their use is so stigmatized. One drawback worth mentioning though is that it’s far easier to over dose compared to caffeine. The chemical also takes days to fully metabolize.

When I quit smoking I have to say that certain things cleared up as far as my health goes. I had had something like walking pnemonia for about a year, constantly coughing. Was likely a fungal infection I aquired harvesting bat guano from a bat cave type thing. Also had inflamed gums. Both of those cleared up within two weeks of my last smoke.

But to my surprise my body fell apart when I quit smoking. Seems like everything started going wrong. It really surprised me. I imagined I would start becoming really healthy but instead all sort of shit went wrong.

It has led me to believe that nicotine was maybe doing something good for me besides synthesizing the sensation of being satisfied it might have done other beneficial things.

Nicotine is actually found in many vegetables like brocollii. Not in very high concentrations, but if you eat lots of veggies like you should you are undoubtedly ingesting nicotine regularly.