Nicotine’s fine. The issue with smoking and chewing tobacco is the delivery system, particularly smoking. It’s a shame, because pipe tobacco tastes and smells absolutely divine. I think it’s still worth it, but understand how others disagree.
Here's [0] 5000 words by Gwern. I don't know whether I agree with his conclusions, but they're likely to be well researched and objectively thought out.
- copy the m&m design (though I don’t like m&m’s)
- do the same thing with beef jerky/trail mix/hummus/steak/treats like that
- do the same thing, but use a good restaurant/coffee shop/board game/friend/TV show/hot tub/other experience