There are different kinds of dependencies; the human brain needs nicotine to function properly, more than you get from modern food. Not recommending tobacco, nor big pharma crap, there are supplements.
Yeah, it's weird. I'm actually a much nicer person on nicotine than I ever was before I got addicted. It makes it really hard to quit, because even after a few weeks, while I don't feel miserable anymore, I do miss the person I was on nicotine.
Not comparable depending on how you deliver it, but this is how I head a couple alcoholists describe it when they stop drinking. They miss the feeling and constantly feel that their new self is not worth as much (because of X).
- Vaping damages lungs (more research needed on other possible conditions).
- Nicotine pouches damage teeth.
I suppose the healthiest way of ingesting nicotine would be nicotine pills, which exist to help people quit smoking (and which is why they are very expensive).